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/*-------------------------------------------------------------------------
* drawElements Quality Program OpenGL ES Utilities
* ------------------------------------------------
*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*//*!
* \file
* \brief Utility functions and structures for texture tests. This code
* is originated from the modules/glshared/glsTextureTestUtil.hpp and it
* is tightly coupled with the GLES and Vulkan texture tests!
*//*--------------------------------------------------------------------*/
#include "gluTextureTestUtil.hpp"
#include "tcuFloat.hpp"
#include "tcuImageCompare.hpp"
#include "tcuTestLog.hpp"
#include "tcuVectorUtil.hpp"
#include "deMath.h"
#include "deStringUtil.hpp"
#include <string>
using std::string;
namespace glu
{
namespace TextureTestUtil
{
enum
{
MIN_SUBPIXEL_BITS = 4
};
SamplerType getSamplerType(tcu::TextureFormat format)
{
using tcu::TextureFormat;
switch (format.type)
{
case TextureFormat::SIGNED_INT8:
case TextureFormat::SIGNED_INT16:
case TextureFormat::SIGNED_INT32:
return SAMPLERTYPE_INT;
case TextureFormat::UNSIGNED_INT8:
case TextureFormat::UNSIGNED_INT32:
case TextureFormat::UNSIGNED_INT_1010102_REV:
return SAMPLERTYPE_UINT;
// Texture formats used in depth/stencil textures.
case TextureFormat::UNSIGNED_INT16:
case TextureFormat::UNSIGNED_INT_24_8:
return (format.order == TextureFormat::D || format.order == TextureFormat::DS) ? SAMPLERTYPE_FLOAT :
SAMPLERTYPE_UINT;
default:
return SAMPLERTYPE_FLOAT;
}
}
SamplerType getFetchSamplerType(tcu::TextureFormat format)
{
using tcu::TextureFormat;
switch (format.type)
{
case TextureFormat::SIGNED_INT8:
case TextureFormat::SIGNED_INT16:
case TextureFormat::SIGNED_INT32:
return SAMPLERTYPE_FETCH_INT;
case TextureFormat::UNSIGNED_INT8:
case TextureFormat::UNSIGNED_INT32:
case TextureFormat::UNSIGNED_INT_1010102_REV:
return SAMPLERTYPE_FETCH_UINT;
// Texture formats used in depth/stencil textures.
case TextureFormat::UNSIGNED_INT16:
case TextureFormat::UNSIGNED_INT_24_8:
return (format.order == TextureFormat::D || format.order == TextureFormat::DS) ? SAMPLERTYPE_FETCH_FLOAT :
SAMPLERTYPE_FETCH_UINT;
default:
return SAMPLERTYPE_FETCH_FLOAT;
}
}
static tcu::Texture1DView getSubView(const tcu::Texture1DView &view, int baseLevel, int maxLevel,
tcu::ImageViewMinLodParams *minLodParams DE_UNUSED_ATTR)
{
const int clampedBase = de::clamp(baseLevel, 0, view.getNumLevels() - 1);
const int clampedMax = de::clamp(maxLevel, clampedBase, view.getNumLevels() - 1);
const int numLevels = clampedMax - clampedBase + 1;
return tcu::Texture1DView(numLevels, view.getLevels() + clampedBase);
}
static tcu::Texture2DView getSubView(const tcu::Texture2DView &view, int baseLevel, int maxLevel,
tcu::ImageViewMinLodParams *minLodParams = DE_NULL)
{
const int clampedBase = de::clamp(baseLevel, 0, view.getNumLevels() - 1);
const int clampedMax = de::clamp(maxLevel, clampedBase, view.getNumLevels() - 1);
const int numLevels = clampedMax - clampedBase + 1;
return tcu::Texture2DView(numLevels, view.getLevels() + clampedBase, view.isES2(), minLodParams);
}
static tcu::TextureCubeView getSubView(const tcu::TextureCubeView &view, int baseLevel, int maxLevel,
tcu::ImageViewMinLodParams *minLodParams = DE_NULL)
{
const int clampedBase = de::clamp(baseLevel, 0, view.getNumLevels() - 1);
const int clampedMax = de::clamp(maxLevel, clampedBase, view.getNumLevels() - 1);
const int numLevels = clampedMax - clampedBase + 1;
const tcu::ConstPixelBufferAccess *levels[tcu::CUBEFACE_LAST];
for (int face = 0; face < tcu::CUBEFACE_LAST; face++)
levels[face] = view.getFaceLevels((tcu::CubeFace)face) + clampedBase;
return tcu::TextureCubeView(numLevels, levels, false, minLodParams);
}
static tcu::Texture3DView getSubView(const tcu::Texture3DView &view, int baseLevel, int maxLevel,
tcu::ImageViewMinLodParams *minLodParams = DE_NULL)
{
const int clampedBase = de::clamp(baseLevel, 0, view.getNumLevels() - 1);
const int clampedMax = de::clamp(maxLevel, clampedBase, view.getNumLevels() - 1);
const int numLevels = clampedMax - clampedBase + 1;
return tcu::Texture3DView(numLevels, view.getLevels() + clampedBase, false, minLodParams);
}
static tcu::TextureCubeArrayView getSubView(const tcu::TextureCubeArrayView &view, int baseLevel, int maxLevel,
tcu::ImageViewMinLodParams *minLodParams DE_UNUSED_ATTR = DE_NULL)
{
const int clampedBase = de::clamp(baseLevel, 0, view.getNumLevels() - 1);
const int clampedMax = de::clamp(maxLevel, clampedBase, view.getNumLevels() - 1);
const int numLevels = clampedMax - clampedBase + 1;
return tcu::TextureCubeArrayView(numLevels, view.getLevels() + clampedBase);
}
inline float linearInterpolate(float t, float minVal, float maxVal)
{
return minVal + (maxVal - minVal) * t;
}
inline tcu::Vec4 linearInterpolate(float t, const tcu::Vec4 &a, const tcu::Vec4 &b)
{
return a + (b - a) * t;
}
inline float bilinearInterpolate(float x, float y, const tcu::Vec4 &quad)
{
float w00 = (1.0f - x) * (1.0f - y);
float w01 = (1.0f - x) * y;
float w10 = x * (1.0f - y);
float w11 = x * y;
return quad.x() * w00 + quad.y() * w10 + quad.z() * w01 + quad.w() * w11;
}
float triangleInterpolate(float v0, float v1, float v2, float x, float y)
{
return v0 + (v2 - v0) * x + (v1 - v0) * y;
}
float triangleInterpolate(const tcu::Vec3 &v, float x, float y)
{
return triangleInterpolate(v.x(), v.y(), v.z(), x, y);
}
// 1D lookup LOD computation.
float computeLodFromDerivates(LodMode mode, float dudx, float dudy)
{
float p = 0.0f;
switch (mode)
{
// \note [mika] Min and max bounds equal to exact with 1D textures
case LODMODE_EXACT:
case LODMODE_MIN_BOUND:
case LODMODE_MAX_BOUND:
p = de::max(deFloatAbs(dudx), deFloatAbs(dudy));
break;
default:
DE_ASSERT(false);
}
return deFloatLog2(p);
}
float computeNonProjectedTriLod(LodMode mode, const tcu::IVec2 &dstSize, int32_t srcSize, const tcu::Vec3 &sq)
{
float dux = (sq.z() - sq.x()) * (float)srcSize;
float duy = (sq.y() - sq.x()) * (float)srcSize;
float dx = (float)dstSize.x();
float dy = (float)dstSize.y();
return computeLodFromDerivates(mode, dux / dx, duy / dy);
}
// 2D lookup LOD computation.
float computeLodFromDerivates(LodMode mode, float dudx, float dvdx, float dudy, float dvdy)
{
float p = 0.0f;
switch (mode)
{
case LODMODE_EXACT:
p = de::max(deFloatSqrt(dudx * dudx + dvdx * dvdx), deFloatSqrt(dudy * dudy + dvdy * dvdy));
break;
case LODMODE_MIN_BOUND:
case LODMODE_MAX_BOUND:
{
float mu = de::max(deFloatAbs(dudx), deFloatAbs(dudy));
float mv = de::max(deFloatAbs(dvdx), deFloatAbs(dvdy));
p = mode == LODMODE_MIN_BOUND ? de::max(mu, mv) : mu + mv;
break;
}
default:
DE_ASSERT(false);
}
return deFloatLog2(p);
}
float computeNonProjectedTriLod(LodMode mode, const tcu::IVec2 &dstSize, const tcu::IVec2 &srcSize, const tcu::Vec3 &sq,
const tcu::Vec3 &tq)
{
float dux = (sq.z() - sq.x()) * (float)srcSize.x();
float duy = (sq.y() - sq.x()) * (float)srcSize.x();
float dvx = (tq.z() - tq.x()) * (float)srcSize.y();
float dvy = (tq.y() - tq.x()) * (float)srcSize.y();
float dx = (float)dstSize.x();
float dy = (float)dstSize.y();
return computeLodFromDerivates(mode, dux / dx, dvx / dx, duy / dy, dvy / dy);
}
// 3D lookup LOD computation.
float computeLodFromDerivates(LodMode mode, float dudx, float dvdx, float dwdx, float dudy, float dvdy, float dwdy)
{
float p = 0.0f;
switch (mode)
{
case LODMODE_EXACT:
p = de::max(deFloatSqrt(dudx * dudx + dvdx * dvdx + dwdx * dwdx),
deFloatSqrt(dudy * dudy + dvdy * dvdy + dwdy * dwdy));
break;
case LODMODE_MIN_BOUND:
case LODMODE_MAX_BOUND:
{
float mu = de::max(deFloatAbs(dudx), deFloatAbs(dudy));
float mv = de::max(deFloatAbs(dvdx), deFloatAbs(dvdy));
float mw = de::max(deFloatAbs(dwdx), deFloatAbs(dwdy));
p = mode == LODMODE_MIN_BOUND ? de::max(de::max(mu, mv), mw) : (mu + mv + mw);
break;
}
default:
DE_ASSERT(false);
}
return deFloatLog2(p);
}
float computeNonProjectedTriLod(LodMode mode, const tcu::IVec2 &dstSize, const tcu::IVec3 &srcSize, const tcu::Vec3 &sq,
const tcu::Vec3 &tq, const tcu::Vec3 &rq)
{
float dux = (sq.z() - sq.x()) * (float)srcSize.x();
float duy = (sq.y() - sq.x()) * (float)srcSize.x();
float dvx = (tq.z() - tq.x()) * (float)srcSize.y();
float dvy = (tq.y() - tq.x()) * (float)srcSize.y();
float dwx = (rq.z() - rq.x()) * (float)srcSize.z();
float dwy = (rq.y() - rq.x()) * (float)srcSize.z();
float dx = (float)dstSize.x();
float dy = (float)dstSize.y();
return computeLodFromDerivates(mode, dux / dx, dvx / dx, dwx / dx, duy / dy, dvy / dy, dwy / dy);
}
static inline float projectedTriInterpolate(const tcu::Vec3 &s, const tcu::Vec3 &w, float nx, float ny)
{
return (s[0] * (1.0f - nx - ny) / w[0] + s[1] * ny / w[1] + s[2] * nx / w[2]) /
((1.0f - nx - ny) / w[0] + ny / w[1] + nx / w[2]);
}
static inline float triDerivateX(const tcu::Vec3 &s, const tcu::Vec3 &w, float wx, float width, float ny)
{
float d = w[1] * w[2] * (width * (ny - 1.0f) + wx) - w[0] * (w[2] * width * ny + w[1] * wx);
return (w[0] * w[1] * w[2] * width *
(w[1] * (s[0] - s[2]) * (ny - 1.0f) + ny * (w[2] * (s[1] - s[0]) + w[0] * (s[2] - s[1])))) /
(d * d);
}
static inline float triDerivateY(const tcu::Vec3 &s, const tcu::Vec3 &w, float wy, float height, float nx)
{
float d = w[1] * w[2] * (height * (nx - 1.0f) + wy) - w[0] * (w[1] * height * nx + w[2] * wy);
return (w[0] * w[1] * w[2] * height *
(w[2] * (s[0] - s[1]) * (nx - 1.0f) + nx * (w[0] * (s[1] - s[2]) + w[1] * (s[2] - s[0])))) /
(d * d);
}
// 1D lookup LOD.
static float computeProjectedTriLod(LodMode mode, const tcu::Vec3 &u, const tcu::Vec3 &projection, float wx, float wy,
float width, float height)
{
// Exact derivatives.
float dudx = triDerivateX(u, projection, wx, width, wy / height);
float dudy = triDerivateY(u, projection, wy, height, wx / width);
return computeLodFromDerivates(mode, dudx, dudy);
}
// 2D lookup LOD.
static float computeProjectedTriLod(LodMode mode, const tcu::Vec3 &u, const tcu::Vec3 &v, const tcu::Vec3 &projection,
float wx, float wy, float width, float height)
{
// Exact derivatives.
float dudx = triDerivateX(u, projection, wx, width, wy / height);
float dvdx = triDerivateX(v, projection, wx, width, wy / height);
float dudy = triDerivateY(u, projection, wy, height, wx / width);
float dvdy = triDerivateY(v, projection, wy, height, wx / width);
return computeLodFromDerivates(mode, dudx, dvdx, dudy, dvdy);
}
// 3D lookup LOD.
static float computeProjectedTriLod(LodMode mode, const tcu::Vec3 &u, const tcu::Vec3 &v, const tcu::Vec3 &w,
const tcu::Vec3 &projection, float wx, float wy, float width, float height)
{
// Exact derivatives.
float dudx = triDerivateX(u, projection, wx, width, wy / height);
float dvdx = triDerivateX(v, projection, wx, width, wy / height);
float dwdx = triDerivateX(w, projection, wx, width, wy / height);
float dudy = triDerivateY(u, projection, wy, height, wx / width);
float dvdy = triDerivateY(v, projection, wy, height, wx / width);
float dwdy = triDerivateY(w, projection, wy, height, wx / width);
return computeLodFromDerivates(mode, dudx, dvdx, dwdx, dudy, dvdy, dwdy);
}
static inline tcu::Vec4 execSample(const tcu::Texture1DView &src, const ReferenceParams &params, float s, float lod)
{
if (params.samplerType == SAMPLERTYPE_SHADOW)
return tcu::Vec4(src.sampleCompare(params.sampler, params.ref, s, lod), 0.0, 0.0, 1.0f);
else
return src.sample(params.sampler, s, lod);
}
static inline tcu::Vec4 execSample(const tcu::Texture2DView &src, const ReferenceParams &params, float s, float t,
float lod)
{
if (params.samplerType == SAMPLERTYPE_SHADOW)
return tcu::Vec4(src.sampleCompare(params.sampler, params.ref, s, t, lod), 0.0, 0.0, 1.0f);
else
return src.sample(params.sampler, s, t, lod);
}
static inline tcu::Vec4 execSample(const tcu::TextureCubeView &src, const ReferenceParams &params, float s, float t,
float r, float lod)
{
if (params.samplerType == SAMPLERTYPE_SHADOW)
return tcu::Vec4(src.sampleCompare(params.sampler, params.ref, s, t, r, lod), 0.0, 0.0, 1.0f);
else
return src.sample(params.sampler, s, t, r, lod);
}
static inline tcu::Vec4 execSample(const tcu::Texture2DArrayView &src, const ReferenceParams &params, float s, float t,
float r, float lod)
{
if (params.samplerType == SAMPLERTYPE_SHADOW)
return tcu::Vec4(src.sampleCompare(params.sampler, params.ref, s, t, r, lod), 0.0, 0.0, 1.0f);
else
return src.sample(params.sampler, s, t, r, lod);
}
static inline tcu::Vec4 execSample(const tcu::TextureCubeArrayView &src, const ReferenceParams &params, float s,
float t, float r, float q, float lod)
{
if (params.samplerType == SAMPLERTYPE_SHADOW)
return tcu::Vec4(src.sampleCompare(params.sampler, params.ref, s, t, r, q, lod), 0.0, 0.0, 1.0f);
else
return src.sample(params.sampler, s, t, r, q, lod);
}
static inline tcu::Vec4 execSample(const tcu::Texture1DArrayView &src, const ReferenceParams &params, float s, float t,
float lod)
{
if (params.samplerType == SAMPLERTYPE_SHADOW)
return tcu::Vec4(src.sampleCompare(params.sampler, params.ref, s, t, lod), 0.0, 0.0, 1.0f);
else
return src.sample(params.sampler, s, t, lod);
}
static void sampleTextureNonProjected(const tcu::SurfaceAccess &dst, const tcu::Texture1DView &rawSrc,
const tcu::Vec4 &sq, const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::Texture1DView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
float lodBias = (params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f;
tcu::IVec2 dstSize = tcu::IVec2(dst.getWidth(), dst.getHeight());
int srcSize = src.getWidth();
// Coordinates and lod per triangle.
tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
float triLod[2] = {de::clamp(computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[0]) + lodBias,
params.minLod, params.maxLod),
de::clamp(computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[1]) + lodBias,
params.minLod, params.maxLod)};
for (int y = 0; y < dst.getHeight(); y++)
{
for (int x = 0; x < dst.getWidth(); x++)
{
float yf = ((float)y + 0.5f) / (float)dst.getHeight();
float xf = ((float)x + 0.5f) / (float)dst.getWidth();
int triNdx = xf + yf >= 1.0f ? 1 : 0; // Top left fill rule.
float triX = triNdx ? 1.0f - xf : xf;
float triY = triNdx ? 1.0f - yf : yf;
float s = triangleInterpolate(triS[triNdx].x(), triS[triNdx].y(), triS[triNdx].z(), triX, triY);
float lod = triLod[triNdx];
dst.setPixel(execSample(src, params, s, lod) * params.colorScale + params.colorBias, x, y);
}
}
}
template <class PixelAccess>
static void sampleTextureNonProjected(const PixelAccess &dst, const tcu::Texture2DView &rawSrc, const tcu::Vec4 &sq,
const tcu::Vec4 &tq, const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
tcu::Texture2DView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
float lodBias = (params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f;
tcu::IVec2 dstSize = tcu::IVec2(dst.getWidth(), dst.getHeight());
tcu::IVec2 srcSize = tcu::IVec2(src.getWidth(), src.getHeight());
// Coordinates and lod per triangle.
tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
float triLod[2] = {
de::clamp(computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[0], triT[0]) + lodBias,
params.minLod, params.maxLod),
de::clamp(computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[1], triT[1]) + lodBias,
params.minLod, params.maxLod)};
for (int y = 0; y < dst.getHeight(); y++)
{
for (int x = 0; x < dst.getWidth(); x++)
{
float yf = ((float)y + 0.5f) / (float)dst.getHeight();
float xf = ((float)x + 0.5f) / (float)dst.getWidth();
int triNdx = xf + yf >= 1.0f ? 1 : 0; // Top left fill rule.
float triX = triNdx ? 1.0f - xf : xf;
float triY = triNdx ? 1.0f - yf : yf;
float s = triangleInterpolate(triS[triNdx].x(), triS[triNdx].y(), triS[triNdx].z(), triX, triY);
float t = triangleInterpolate(triT[triNdx].x(), triT[triNdx].y(), triT[triNdx].z(), triX, triY);
float lod = triLod[triNdx];
if (params.imageViewMinLod != 0.0f && params.samplerType == SAMPLERTYPE_FETCH_FLOAT)
lod = (float)params.lodTexelFetch;
if (params.float16TexCoord)
{
s = tcu::Float16(s, tcu::ROUND_TO_ZERO).asFloat();
t = tcu::Float16(t, tcu::ROUND_TO_ZERO).asFloat();
}
dst.setPixel(execSample(src, params, s, t, lod) * params.colorScale + params.colorBias, x, y);
}
}
}
static void sampleTextureProjected(const tcu::SurfaceAccess &dst, const tcu::Texture1DView &rawSrc, const tcu::Vec4 &sq,
const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::Texture1DView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
float lodBias = (params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f;
float dstW = (float)dst.getWidth();
float dstH = (float)dst.getHeight();
tcu::Vec4 uq = sq * (float)src.getWidth();
tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
tcu::Vec3 triU[2] = {uq.swizzle(0, 1, 2), uq.swizzle(3, 2, 1)};
tcu::Vec3 triW[2] = {params.w.swizzle(0, 1, 2), params.w.swizzle(3, 2, 1)};
for (int py = 0; py < dst.getHeight(); py++)
{
for (int px = 0; px < dst.getWidth(); px++)
{
float wx = (float)px + 0.5f;
float wy = (float)py + 0.5f;
float nx = wx / dstW;
float ny = wy / dstH;
int triNdx = nx + ny >= 1.0f ? 1 : 0;
float triWx = triNdx ? dstW - wx : wx;
float triWy = triNdx ? dstH - wy : wy;
float triNx = triNdx ? 1.0f - nx : nx;
float triNy = triNdx ? 1.0f - ny : ny;
float s = projectedTriInterpolate(triS[triNdx], triW[triNdx], triNx, triNy);
float lod = computeProjectedTriLod(params.lodMode, triU[triNdx], triW[triNdx], triWx, triWy,
(float)dst.getWidth(), (float)dst.getHeight()) +
lodBias;
dst.setPixel(execSample(src, params, s, lod) * params.colorScale + params.colorBias, px, py);
}
}
}
template <class PixelAccess>
static void sampleTextureProjected(const PixelAccess &dst, const tcu::Texture2DView &rawSrc, const tcu::Vec4 &sq,
const tcu::Vec4 &tq, const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::Texture2DView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
float lodBias = (params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f;
float dstW = (float)dst.getWidth();
float dstH = (float)dst.getHeight();
tcu::Vec4 uq = sq * (float)src.getWidth();
tcu::Vec4 vq = tq * (float)src.getHeight();
tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
tcu::Vec3 triU[2] = {uq.swizzle(0, 1, 2), uq.swizzle(3, 2, 1)};
tcu::Vec3 triV[2] = {vq.swizzle(0, 1, 2), vq.swizzle(3, 2, 1)};
tcu::Vec3 triW[2] = {params.w.swizzle(0, 1, 2), params.w.swizzle(3, 2, 1)};
for (int py = 0; py < dst.getHeight(); py++)
{
for (int px = 0; px < dst.getWidth(); px++)
{
float wx = (float)px + 0.5f;
float wy = (float)py + 0.5f;
float nx = wx / dstW;
float ny = wy / dstH;
int triNdx = nx + ny >= 1.0f ? 1 : 0;
float triWx = triNdx ? dstW - wx : wx;
float triWy = triNdx ? dstH - wy : wy;
float triNx = triNdx ? 1.0f - nx : nx;
float triNy = triNdx ? 1.0f - ny : ny;
float s = projectedTriInterpolate(triS[triNdx], triW[triNdx], triNx, triNy);
float t = projectedTriInterpolate(triT[triNdx], triW[triNdx], triNx, triNy);
float lod = computeProjectedTriLod(params.lodMode, triU[triNdx], triV[triNdx], triW[triNdx], triWx, triWy,
(float)dst.getWidth(), (float)dst.getHeight()) +
lodBias;
dst.setPixel(execSample(src, params, s, t, lod) * params.colorScale + params.colorBias, px, py);
}
}
}
void sampleTexture(const tcu::PixelBufferAccess &dst, const tcu::Texture2DView &src, const float *texCoord,
const ReferenceParams &params)
{
tcu::ImageViewMinLodParams minLodParams = {
params.baseLevel, // int baseLevel;
{
params.imageViewMinLod, // float minLod;
params.imageViewMinLodMode, // ImageViewMinLodMode
},
params.samplerType == SAMPLERTYPE_FETCH_FLOAT // bool intTexCoord;
};
const tcu::Texture2DView view =
getSubView(src, params.baseLevel, params.maxLevel, params.imageViewMinLod != 0.0f ? &minLodParams : DE_NULL);
const tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[2 + 0], texCoord[4 + 0], texCoord[6 + 0]);
const tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[2 + 1], texCoord[4 + 1], texCoord[6 + 1]);
if (params.flags & ReferenceParams::PROJECTED)
sampleTextureProjected(dst, view, sq, tq, params);
else
sampleTextureNonProjected(dst, view, sq, tq, params);
}
void sampleTexture(const tcu::SurfaceAccess &dst, const tcu::Texture2DView &src, const float *texCoord,
const ReferenceParams &params)
{
tcu::ImageViewMinLodParams minLodParams = {
params.baseLevel, // int baseLevel;
{
params.imageViewMinLod, // float minLod;
params.imageViewMinLodMode, // ImageViewMinLodMode
},
params.samplerType == SAMPLERTYPE_FETCH_FLOAT // bool intTexCoord;
};
const tcu::Texture2DView view =
getSubView(src, params.baseLevel, params.maxLevel, params.imageViewMinLod != 0.0f ? &minLodParams : DE_NULL);
const tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[2 + 0], texCoord[4 + 0], texCoord[6 + 0]);
const tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[2 + 1], texCoord[4 + 1], texCoord[6 + 1]);
if (params.flags & ReferenceParams::PROJECTED)
sampleTextureProjected(dst, view, sq, tq, params);
else
sampleTextureNonProjected(dst, view, sq, tq, params);
}
void sampleTexture(const tcu::SurfaceAccess &dst, const tcu::Texture1DView &src, const float *texCoord,
const ReferenceParams &params)
{
const tcu::Texture1DView view = getSubView(src, params.baseLevel, params.maxLevel, DE_NULL);
const tcu::Vec4 sq = tcu::Vec4(texCoord[0], texCoord[1], texCoord[2], texCoord[3]);
if (params.flags & ReferenceParams::PROJECTED)
sampleTextureProjected(dst, view, sq, params);
else
sampleTextureNonProjected(dst, view, sq, params);
}
static float computeCubeLodFromDerivates(LodMode lodMode, const tcu::Vec3 &coord, const tcu::Vec3 &coordDx,
const tcu::Vec3 &coordDy, const int faceSize)
{
const tcu::CubeFace face = tcu::selectCubeFace(coord);
int maNdx = 0;
int sNdx = 0;
int tNdx = 0;
// \note Derivate signs don't matter when computing lod
switch (face)
{
case tcu::CUBEFACE_NEGATIVE_X:
case tcu::CUBEFACE_POSITIVE_X:
maNdx = 0;
sNdx = 2;
tNdx = 1;
break;
case tcu::CUBEFACE_NEGATIVE_Y:
case tcu::CUBEFACE_POSITIVE_Y:
maNdx = 1;
sNdx = 0;
tNdx = 2;
break;
case tcu::CUBEFACE_NEGATIVE_Z:
case tcu::CUBEFACE_POSITIVE_Z:
maNdx = 2;
sNdx = 0;
tNdx = 1;
break;
default:
DE_ASSERT(false);
}
{
const float sc = coord[sNdx];
const float tc = coord[tNdx];
const float ma = de::abs(coord[maNdx]);
const float scdx = coordDx[sNdx];
const float tcdx = coordDx[tNdx];
const float madx = de::abs(coordDx[maNdx]);
const float scdy = coordDy[sNdx];
const float tcdy = coordDy[tNdx];
const float mady = de::abs(coordDy[maNdx]);
const float dudx = float(faceSize) * 0.5f * (scdx * ma - sc * madx) / (ma * ma);
const float dvdx = float(faceSize) * 0.5f * (tcdx * ma - tc * madx) / (ma * ma);
const float dudy = float(faceSize) * 0.5f * (scdy * ma - sc * mady) / (ma * ma);
const float dvdy = float(faceSize) * 0.5f * (tcdy * ma - tc * mady) / (ma * ma);
return computeLodFromDerivates(lodMode, dudx, dvdx, dudy, dvdy);
}
}
static void sampleTextureCube(const tcu::SurfaceAccess &dst, const tcu::TextureCubeView &rawSrc, const tcu::Vec4 &sq,
const tcu::Vec4 &tq, const tcu::Vec4 &rq, const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::TextureCubeView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
const tcu::IVec2 dstSize = tcu::IVec2(dst.getWidth(), dst.getHeight());
const float dstW = float(dstSize.x());
const float dstH = float(dstSize.y());
const int srcSize = src.getSize();
// Coordinates per triangle.
const tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
const tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
const tcu::Vec3 triR[2] = {rq.swizzle(0, 1, 2), rq.swizzle(3, 2, 1)};
const tcu::Vec3 triW[2] = {params.w.swizzle(0, 1, 2), params.w.swizzle(3, 2, 1)};
const float lodBias((params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f);
for (int py = 0; py < dst.getHeight(); py++)
{
for (int px = 0; px < dst.getWidth(); px++)
{
const float wx = (float)px + 0.5f;
const float wy = (float)py + 0.5f;
const float nx = wx / dstW;
const float ny = wy / dstH;
const int triNdx = nx + ny >= 1.0f ? 1 : 0;
const float triNx = triNdx ? 1.0f - nx : nx;
const float triNy = triNdx ? 1.0f - ny : ny;
const tcu::Vec3 coord(triangleInterpolate(triS[triNdx], triNx, triNy),
triangleInterpolate(triT[triNdx], triNx, triNy),
triangleInterpolate(triR[triNdx], triNx, triNy));
const tcu::Vec3 coordDx(triDerivateX(triS[triNdx], triW[triNdx], wx, dstW, triNy),
triDerivateX(triT[triNdx], triW[triNdx], wx, dstW, triNy),
triDerivateX(triR[triNdx], triW[triNdx], wx, dstW, triNy));
const tcu::Vec3 coordDy(triDerivateY(triS[triNdx], triW[triNdx], wy, dstH, triNx),
triDerivateY(triT[triNdx], triW[triNdx], wy, dstH, triNx),
triDerivateY(triR[triNdx], triW[triNdx], wy, dstH, triNx));
const float lod =
de::clamp(computeCubeLodFromDerivates(params.lodMode, coord, coordDx, coordDy, srcSize) + lodBias,
params.minLod, params.maxLod);
dst.setPixel(execSample(src, params, coord.x(), coord.y(), coord.z(), lod) * params.colorScale +
params.colorBias,
px, py);
}
}
}
void sampleTexture(const tcu::SurfaceAccess &dst, const tcu::TextureCubeView &src, const float *texCoord,
const ReferenceParams &params)
{
tcu::ImageViewMinLodParams minLodParams = {
params.baseLevel, // int baseLevel;
{
params.imageViewMinLod, // float minLod;
params.imageViewMinLodMode, // ImageViewMinLodMode
},
params.samplerType == SAMPLERTYPE_FETCH_FLOAT // bool intTexCoord;
};
const tcu::TextureCubeView view =
getSubView(src, params.baseLevel, params.maxLevel, params.imageViewMinLod != 0.0f ? &minLodParams : DE_NULL);
const tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[3 + 0], texCoord[6 + 0], texCoord[9 + 0]);
const tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[3 + 1], texCoord[6 + 1], texCoord[9 + 1]);
const tcu::Vec4 rq = tcu::Vec4(texCoord[0 + 2], texCoord[3 + 2], texCoord[6 + 2], texCoord[9 + 2]);
return sampleTextureCube(dst, view, sq, tq, rq, params);
}
static void sampleTextureNonProjected(const tcu::SurfaceAccess &dst, const tcu::Texture2DArrayView &rawSrc,
const tcu::Vec4 &sq, const tcu::Vec4 &tq, const tcu::Vec4 &rq,
const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::Texture2DArrayView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
float lodBias = (params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f;
tcu::IVec2 dstSize = tcu::IVec2(dst.getWidth(), dst.getHeight());
tcu::IVec2 srcSize = tcu::IVec2(src.getWidth(), src.getHeight());
// Coordinates and lod per triangle.
tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
tcu::Vec3 triR[2] = {rq.swizzle(0, 1, 2), rq.swizzle(3, 2, 1)};
float triLod[2] = {
de::clamp(computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[0], triT[0]) + lodBias,
params.minLod, params.maxLod),
de::clamp(computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[1], triT[1]) + lodBias,
params.minLod, params.maxLod)};
for (int y = 0; y < dst.getHeight(); y++)
{
for (int x = 0; x < dst.getWidth(); x++)
{
float yf = ((float)y + 0.5f) / (float)dst.getHeight();
float xf = ((float)x + 0.5f) / (float)dst.getWidth();
int triNdx = xf + yf >= 1.0f ? 1 : 0; // Top left fill rule.
float triX = triNdx ? 1.0f - xf : xf;
float triY = triNdx ? 1.0f - yf : yf;
float s = triangleInterpolate(triS[triNdx].x(), triS[triNdx].y(), triS[triNdx].z(), triX, triY);
float t = triangleInterpolate(triT[triNdx].x(), triT[triNdx].y(), triT[triNdx].z(), triX, triY);
float r = triangleInterpolate(triR[triNdx].x(), triR[triNdx].y(), triR[triNdx].z(), triX, triY);
float lod = triLod[triNdx];
dst.setPixel(execSample(src, params, s, t, r, lod) * params.colorScale + params.colorBias, x, y);
}
}
}
void sampleTexture(const tcu::SurfaceAccess &dst, const tcu::Texture2DArrayView &src, const float *texCoord,
const ReferenceParams &params)
{
tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[3 + 0], texCoord[6 + 0], texCoord[9 + 0]);
tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[3 + 1], texCoord[6 + 1], texCoord[9 + 1]);
tcu::Vec4 rq = tcu::Vec4(texCoord[0 + 2], texCoord[3 + 2], texCoord[6 + 2], texCoord[9 + 2]);
DE_ASSERT(!(params.flags & ReferenceParams::PROJECTED)); // \todo [2012-02-17 pyry] Support projected lookups.
sampleTextureNonProjected(dst, src, sq, tq, rq, params);
}
static void sampleTextureNonProjected(const tcu::SurfaceAccess &dst, const tcu::Texture1DArrayView &rawSrc,
const tcu::Vec4 &sq, const tcu::Vec4 &tq, const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::Texture1DArrayView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
float lodBias = (params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f;
tcu::IVec2 dstSize = tcu::IVec2(dst.getWidth(), dst.getHeight());
int32_t srcSize = src.getWidth();
// Coordinates and lod per triangle.
tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
float triLod[2] = {computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[0]) + lodBias,
computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[1]) + lodBias};
for (int y = 0; y < dst.getHeight(); y++)
{
for (int x = 0; x < dst.getWidth(); x++)
{
float yf = ((float)y + 0.5f) / (float)dst.getHeight();
float xf = ((float)x + 0.5f) / (float)dst.getWidth();
int triNdx = xf + yf >= 1.0f ? 1 : 0; // Top left fill rule.
float triX = triNdx ? 1.0f - xf : xf;
float triY = triNdx ? 1.0f - yf : yf;
float s = triangleInterpolate(triS[triNdx].x(), triS[triNdx].y(), triS[triNdx].z(), triX, triY);
float t = triangleInterpolate(triT[triNdx].x(), triT[triNdx].y(), triT[triNdx].z(), triX, triY);
float lod = triLod[triNdx];
dst.setPixel(execSample(src, params, s, t, lod) * params.colorScale + params.colorBias, x, y);
}
}
}
void sampleTexture(const tcu::SurfaceAccess &dst, const tcu::Texture1DArrayView &src, const float *texCoord,
const ReferenceParams &params)
{
tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[2 + 0], texCoord[4 + 0], texCoord[6 + 0]);
tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[2 + 1], texCoord[4 + 1], texCoord[6 + 1]);
DE_ASSERT(!(params.flags & ReferenceParams::PROJECTED)); // \todo [2014-06-09 mika] Support projected lookups.
sampleTextureNonProjected(dst, src, sq, tq, params);
}
static void sampleTextureNonProjected(const tcu::SurfaceAccess &dst, const tcu::Texture3DView &rawSrc,
const tcu::Vec4 &sq, const tcu::Vec4 &tq, const tcu::Vec4 &rq,
const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::Texture3DView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
float lodBias = (params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f;
tcu::IVec2 dstSize = tcu::IVec2(dst.getWidth(), dst.getHeight());
tcu::IVec3 srcSize = tcu::IVec3(src.getWidth(), src.getHeight(), src.getDepth());
// Coordinates and lod per triangle.
tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
tcu::Vec3 triR[2] = {rq.swizzle(0, 1, 2), rq.swizzle(3, 2, 1)};
float triLod[2] = {
de::clamp(computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[0], triT[0], triR[0]) + lodBias,
params.minLod, params.maxLod),
de::clamp(computeNonProjectedTriLod(params.lodMode, dstSize, srcSize, triS[1], triT[1], triR[1]) + lodBias,
params.minLod, params.maxLod)};
for (int y = 0; y < dst.getHeight(); y++)
{
for (int x = 0; x < dst.getWidth(); x++)
{
float yf = ((float)y + 0.5f) / (float)dst.getHeight();
float xf = ((float)x + 0.5f) / (float)dst.getWidth();
int triNdx = xf + yf >= 1.0f ? 1 : 0; // Top left fill rule.
float triX = triNdx ? 1.0f - xf : xf;
float triY = triNdx ? 1.0f - yf : yf;
float s = triangleInterpolate(triS[triNdx].x(), triS[triNdx].y(), triS[triNdx].z(), triX, triY);
float t = triangleInterpolate(triT[triNdx].x(), triT[triNdx].y(), triT[triNdx].z(), triX, triY);
float r = triangleInterpolate(triR[triNdx].x(), triR[triNdx].y(), triR[triNdx].z(), triX, triY);
float lod = triLod[triNdx];
if (params.imageViewMinLod != 0.0f && params.samplerType == SAMPLERTYPE_FETCH_FLOAT)
lod = (float)params.lodTexelFetch;
dst.setPixel(src.sample(params.sampler, s, t, r, lod) * params.colorScale + params.colorBias, x, y);
}
}
}
static void sampleTextureProjected(const tcu::SurfaceAccess &dst, const tcu::Texture3DView &rawSrc, const tcu::Vec4 &sq,
const tcu::Vec4 &tq, const tcu::Vec4 &rq, const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::Texture3DView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
float lodBias = (params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f;
float dstW = (float)dst.getWidth();
float dstH = (float)dst.getHeight();
tcu::Vec4 uq = sq * (float)src.getWidth();
tcu::Vec4 vq = tq * (float)src.getHeight();
tcu::Vec4 wq = rq * (float)src.getDepth();
tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
tcu::Vec3 triR[2] = {rq.swizzle(0, 1, 2), rq.swizzle(3, 2, 1)};
tcu::Vec3 triU[2] = {uq.swizzle(0, 1, 2), uq.swizzle(3, 2, 1)};
tcu::Vec3 triV[2] = {vq.swizzle(0, 1, 2), vq.swizzle(3, 2, 1)};
tcu::Vec3 triW[2] = {wq.swizzle(0, 1, 2), wq.swizzle(3, 2, 1)};
tcu::Vec3 triP[2] = {params.w.swizzle(0, 1, 2), params.w.swizzle(3, 2, 1)};
for (int py = 0; py < dst.getHeight(); py++)
{
for (int px = 0; px < dst.getWidth(); px++)
{
float wx = (float)px + 0.5f;
float wy = (float)py + 0.5f;
float nx = wx / dstW;
float ny = wy / dstH;
int triNdx = nx + ny >= 1.0f ? 1 : 0;
float triWx = triNdx ? dstW - wx : wx;
float triWy = triNdx ? dstH - wy : wy;
float triNx = triNdx ? 1.0f - nx : nx;
float triNy = triNdx ? 1.0f - ny : ny;
float s = projectedTriInterpolate(triS[triNdx], triP[triNdx], triNx, triNy);
float t = projectedTriInterpolate(triT[triNdx], triP[triNdx], triNx, triNy);
float r = projectedTriInterpolate(triR[triNdx], triP[triNdx], triNx, triNy);
float lod = computeProjectedTriLod(params.lodMode, triU[triNdx], triV[triNdx], triW[triNdx], triP[triNdx],
triWx, triWy, (float)dst.getWidth(), (float)dst.getHeight()) +
lodBias;
dst.setPixel(src.sample(params.sampler, s, t, r, lod) * params.colorScale + params.colorBias, px, py);
}
}
}
void sampleTexture(const tcu::SurfaceAccess &dst, const tcu::Texture3DView &src, const float *texCoord,
const ReferenceParams &params)
{
tcu::ImageViewMinLodParams minLodParams = {
params.baseLevel, // int baseLevel;
{
params.imageViewMinLod, // float minLod;
params.imageViewMinLodMode, // ImageViewMinLodMode
},
params.samplerType == SAMPLERTYPE_FETCH_FLOAT // bool intTexCoord;
};
const tcu::Texture3DView view =
getSubView(src, params.baseLevel, params.maxLevel, params.imageViewMinLod != 0.0f ? &minLodParams : DE_NULL);
const tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[3 + 0], texCoord[6 + 0], texCoord[9 + 0]);
const tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[3 + 1], texCoord[6 + 1], texCoord[9 + 1]);
const tcu::Vec4 rq = tcu::Vec4(texCoord[0 + 2], texCoord[3 + 2], texCoord[6 + 2], texCoord[9 + 2]);
if (params.flags & ReferenceParams::PROJECTED)
sampleTextureProjected(dst, view, sq, tq, rq, params);
else
sampleTextureNonProjected(dst, view, sq, tq, rq, params);
}
static void sampleTextureCubeArray(const tcu::SurfaceAccess &dst, const tcu::TextureCubeArrayView &rawSrc,
const tcu::Vec4 &sq, const tcu::Vec4 &tq, const tcu::Vec4 &rq, const tcu::Vec4 &qq,
const ReferenceParams &params)
{
// Separate combined DS formats
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::TextureCubeArrayView src = getEffectiveTextureView(rawSrc, srcLevelStorage, params.sampler);
const float dstW = (float)dst.getWidth();
const float dstH = (float)dst.getHeight();
// Coordinates per triangle.
tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
tcu::Vec3 triR[2] = {rq.swizzle(0, 1, 2), rq.swizzle(3, 2, 1)};
tcu::Vec3 triQ[2] = {qq.swizzle(0, 1, 2), qq.swizzle(3, 2, 1)};
const tcu::Vec3 triW[2] = {params.w.swizzle(0, 1, 2), params.w.swizzle(3, 2, 1)};
const float lodBias = (params.flags & ReferenceParams::USE_BIAS) ? params.bias : 0.0f;
for (int py = 0; py < dst.getHeight(); py++)
{
for (int px = 0; px < dst.getWidth(); px++)
{
const float wx = (float)px + 0.5f;
const float wy = (float)py + 0.5f;
const float nx = wx / dstW;
const float ny = wy / dstH;
const int triNdx = nx + ny >= 1.0f ? 1 : 0;
const float triNx = triNdx ? 1.0f - nx : nx;
const float triNy = triNdx ? 1.0f - ny : ny;
const tcu::Vec3 coord(triangleInterpolate(triS[triNdx], triNx, triNy),
triangleInterpolate(triT[triNdx], triNx, triNy),
triangleInterpolate(triR[triNdx], triNx, triNy));
const float coordQ = triangleInterpolate(triQ[triNdx], triNx, triNy);
const tcu::Vec3 coordDx(triDerivateX(triS[triNdx], triW[triNdx], wx, dstW, triNy),
triDerivateX(triT[triNdx], triW[triNdx], wx, dstW, triNy),
triDerivateX(triR[triNdx], triW[triNdx], wx, dstW, triNy));
const tcu::Vec3 coordDy(triDerivateY(triS[triNdx], triW[triNdx], wy, dstH, triNx),
triDerivateY(triT[triNdx], triW[triNdx], wy, dstH, triNx),
triDerivateY(triR[triNdx], triW[triNdx], wy, dstH, triNx));
const float lod =
de::clamp(computeCubeLodFromDerivates(params.lodMode, coord, coordDx, coordDy, src.getSize()) + lodBias,
params.minLod, params.maxLod);
dst.setPixel(execSample(src, params, coord.x(), coord.y(), coord.z(), coordQ, lod) * params.colorScale +
params.colorBias,
px, py);
}
}
}
void sampleTexture(const tcu::SurfaceAccess &dst, const tcu::TextureCubeArrayView &src, const float *texCoord,
const ReferenceParams &params)
{
tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[4 + 0], texCoord[8 + 0], texCoord[12 + 0]);
tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[4 + 1], texCoord[8 + 1], texCoord[12 + 1]);
tcu::Vec4 rq = tcu::Vec4(texCoord[0 + 2], texCoord[4 + 2], texCoord[8 + 2], texCoord[12 + 2]);
tcu::Vec4 qq = tcu::Vec4(texCoord[0 + 3], texCoord[4 + 3], texCoord[8 + 3], texCoord[12 + 3]);
sampleTextureCubeArray(dst, src, sq, tq, rq, qq, params);
}
void fetchTexture(const tcu::SurfaceAccess &dst, const tcu::ConstPixelBufferAccess &src, const float *texCoord,
const tcu::Vec4 &colorScale, const tcu::Vec4 &colorBias)
{
const tcu::Vec4 sq = tcu::Vec4(texCoord[0], texCoord[1], texCoord[2], texCoord[3]);
const tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
for (int y = 0; y < dst.getHeight(); y++)
{
for (int x = 0; x < dst.getWidth(); x++)
{
const float yf = ((float)y + 0.5f) / (float)dst.getHeight();
const float xf = ((float)x + 0.5f) / (float)dst.getWidth();
const int triNdx = xf + yf >= 1.0f ? 1 : 0; // Top left fill rule.
const float triX = triNdx ? 1.0f - xf : xf;
const float triY = triNdx ? 1.0f - yf : yf;
const float s = triangleInterpolate(triS[triNdx].x(), triS[triNdx].y(), triS[triNdx].z(), triX, triY);
dst.setPixel(src.getPixel((int)s, 0) * colorScale + colorBias, x, y);
}
}
}
bool compareImages(tcu::TestLog &log, const tcu::Surface &reference, const tcu::Surface &rendered, tcu::RGBA threshold)
{
return tcu::pixelThresholdCompare(log, "Result", "Image comparison result", reference, rendered, threshold,
tcu::COMPARE_LOG_RESULT);
}
bool compareImages(tcu::TestLog &log, const char *name, const char *desc, const tcu::Surface &reference,
const tcu::Surface &rendered, tcu::RGBA threshold)
{
return tcu::pixelThresholdCompare(log, name, desc, reference, rendered, threshold, tcu::COMPARE_LOG_RESULT);
}
int measureAccuracy(tcu::TestLog &log, const tcu::Surface &reference, const tcu::Surface &rendered, int bestScoreDiff,
int worstScoreDiff)
{
return tcu::measurePixelDiffAccuracy(log, "Result", "Image comparison result", reference, rendered, bestScoreDiff,
worstScoreDiff, tcu::COMPARE_LOG_EVERYTHING);
}
inline int rangeDiff(int x, int a, int b)
{
if (x < a)
return a - x;
else if (x > b)
return x - b;
else
return 0;
}
inline tcu::RGBA rangeDiff(tcu::RGBA p, tcu::RGBA a, tcu::RGBA b)
{
int rMin = de::min(a.getRed(), b.getRed());
int rMax = de::max(a.getRed(), b.getRed());
int gMin = de::min(a.getGreen(), b.getGreen());
int gMax = de::max(a.getGreen(), b.getGreen());
int bMin = de::min(a.getBlue(), b.getBlue());
int bMax = de::max(a.getBlue(), b.getBlue());
int aMin = de::min(a.getAlpha(), b.getAlpha());
int aMax = de::max(a.getAlpha(), b.getAlpha());
return tcu::RGBA(rangeDiff(p.getRed(), rMin, rMax), rangeDiff(p.getGreen(), gMin, gMax),
rangeDiff(p.getBlue(), bMin, bMax), rangeDiff(p.getAlpha(), aMin, aMax));
}
inline bool rangeCompare(tcu::RGBA p, tcu::RGBA a, tcu::RGBA b, tcu::RGBA threshold)
{
tcu::RGBA diff = rangeDiff(p, a, b);
return diff.getRed() <= threshold.getRed() && diff.getGreen() <= threshold.getGreen() &&
diff.getBlue() <= threshold.getBlue() && diff.getAlpha() <= threshold.getAlpha();
}
void computeQuadTexCoord1D(std::vector<float> &dst, float left, float right)
{
dst.resize(4);
dst[0] = left;
dst[1] = left;
dst[2] = right;
dst[3] = right;
}
void computeQuadTexCoord1DArray(std::vector<float> &dst, int layerNdx, float left, float right)
{
dst.resize(4 * 2);
dst[0] = left;
dst[1] = (float)layerNdx;
dst[2] = left;
dst[3] = (float)layerNdx;
dst[4] = right;
dst[5] = (float)layerNdx;
dst[6] = right;
dst[7] = (float)layerNdx;
}
void computeQuadTexCoord2D(std::vector<float> &dst, const tcu::Vec2 &bottomLeft, const tcu::Vec2 &topRight)
{
dst.resize(4 * 2);
dst[0] = bottomLeft.x();
dst[1] = bottomLeft.y();
dst[2] = bottomLeft.x();
dst[3] = topRight.y();
dst[4] = topRight.x();
dst[5] = bottomLeft.y();
dst[6] = topRight.x();
dst[7] = topRight.y();
}
void computeQuadTexCoord2DArray(std::vector<float> &dst, int layerNdx, const tcu::Vec2 &bottomLeft,
const tcu::Vec2 &topRight)
{
dst.resize(4 * 3);
dst[0] = bottomLeft.x();
dst[1] = bottomLeft.y();
dst[2] = (float)layerNdx;
dst[3] = bottomLeft.x();
dst[4] = topRight.y();
dst[5] = (float)layerNdx;
dst[6] = topRight.x();
dst[7] = bottomLeft.y();
dst[8] = (float)layerNdx;
dst[9] = topRight.x();
dst[10] = topRight.y();
dst[11] = (float)layerNdx;
}
void computeQuadTexCoord3D(std::vector<float> &dst, const tcu::Vec3 &p0, const tcu::Vec3 &p1, const tcu::IVec3 &dirSwz)
{
tcu::Vec3 f0 = tcu::Vec3(0.0f, 0.0f, 0.0f).swizzle(dirSwz[0], dirSwz[1], dirSwz[2]);
tcu::Vec3 f1 = tcu::Vec3(0.0f, 1.0f, 0.0f).swizzle(dirSwz[0], dirSwz[1], dirSwz[2]);
tcu::Vec3 f2 = tcu::Vec3(1.0f, 0.0f, 0.0f).swizzle(dirSwz[0], dirSwz[1], dirSwz[2]);
tcu::Vec3 f3 = tcu::Vec3(1.0f, 1.0f, 0.0f).swizzle(dirSwz[0], dirSwz[1], dirSwz[2]);
tcu::Vec3 v0 = p0 + (p1 - p0) * f0;
tcu::Vec3 v1 = p0 + (p1 - p0) * f1;
tcu::Vec3 v2 = p0 + (p1 - p0) * f2;
tcu::Vec3 v3 = p0 + (p1 - p0) * f3;
dst.resize(4 * 3);
dst[0] = v0.x();
dst[1] = v0.y();
dst[2] = v0.z();
dst[3] = v1.x();
dst[4] = v1.y();
dst[5] = v1.z();
dst[6] = v2.x();
dst[7] = v2.y();
dst[8] = v2.z();
dst[9] = v3.x();
dst[10] = v3.y();
dst[11] = v3.z();
}
void computeQuadTexCoordCube(std::vector<float> &dst, tcu::CubeFace face)
{
static const float texCoordNegX[] = {-1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f,
-1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f};
static const float texCoordPosX[] = {+1.0f, 1.0f, 1.0f, +1.0f, -1.0f, 1.0f,
+1.0f, 1.0f, -1.0f, +1.0f, -1.0f, -1.0f};
static const float texCoordNegY[] = {-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f,
1.0f, -1.0f, 1.0f, 1.0f, -1.0f, -1.0f};
static const float texCoordPosY[] = {-1.0f, +1.0f, -1.0f, -1.0f, +1.0f, 1.0f,
1.0f, +1.0f, -1.0f, 1.0f, +1.0f, 1.0f};
static const float texCoordNegZ[] = {1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f,
-1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f};
static const float texCoordPosZ[] = {-1.0f, 1.0f, +1.0f, -1.0f, -1.0f, +1.0f,
1.0f, 1.0f, +1.0f, 1.0f, -1.0f, +1.0f};
const float *texCoord = DE_NULL;
int texCoordSize = DE_LENGTH_OF_ARRAY(texCoordNegX);
switch (face)
{
case tcu::CUBEFACE_NEGATIVE_X:
texCoord = texCoordNegX;
break;
case tcu::CUBEFACE_POSITIVE_X:
texCoord = texCoordPosX;
break;
case tcu::CUBEFACE_NEGATIVE_Y:
texCoord = texCoordNegY;
break;
case tcu::CUBEFACE_POSITIVE_Y:
texCoord = texCoordPosY;
break;
case tcu::CUBEFACE_NEGATIVE_Z:
texCoord = texCoordNegZ;
break;
case tcu::CUBEFACE_POSITIVE_Z:
texCoord = texCoordPosZ;
break;
default:
DE_ASSERT(false);
return;
}
dst.resize(texCoordSize);
std::copy(texCoord, texCoord + texCoordSize, dst.begin());
}
void computeQuadTexCoordCube(std::vector<float> &dst, tcu::CubeFace face, const tcu::Vec2 &bottomLeft,
const tcu::Vec2 &topRight)
{
int sRow = 0;
int tRow = 0;
int mRow = 0;
float sSign = 1.0f;
float tSign = 1.0f;
float mSign = 1.0f;
switch (face)
{
case tcu::CUBEFACE_NEGATIVE_X:
mRow = 0;
sRow = 2;
tRow = 1;
mSign = -1.0f;
tSign = -1.0f;
break;
case tcu::CUBEFACE_POSITIVE_X:
mRow = 0;
sRow = 2;
tRow = 1;
sSign = -1.0f;
tSign = -1.0f;
break;
case tcu::CUBEFACE_NEGATIVE_Y:
mRow = 1;
sRow = 0;
tRow = 2;
mSign = -1.0f;
tSign = -1.0f;
break;
case tcu::CUBEFACE_POSITIVE_Y:
mRow = 1;
sRow = 0;
tRow = 2;
break;
case tcu::CUBEFACE_NEGATIVE_Z:
mRow = 2;
sRow = 0;
tRow = 1;
mSign = -1.0f;
sSign = -1.0f;
tSign = -1.0f;
break;
case tcu::CUBEFACE_POSITIVE_Z:
mRow = 2;
sRow = 0;
tRow = 1;
tSign = -1.0f;
break;
default:
DE_ASSERT(false);
return;
}
dst.resize(3 * 4);
dst[0 + mRow] = mSign;
dst[3 + mRow] = mSign;
dst[6 + mRow] = mSign;
dst[9 + mRow] = mSign;
dst[0 + sRow] = sSign * bottomLeft.x();
dst[3 + sRow] = sSign * bottomLeft.x();
dst[6 + sRow] = sSign * topRight.x();
dst[9 + sRow] = sSign * topRight.x();
dst[0 + tRow] = tSign * bottomLeft.y();
dst[3 + tRow] = tSign * topRight.y();
dst[6 + tRow] = tSign * bottomLeft.y();
dst[9 + tRow] = tSign * topRight.y();
}
void computeQuadTexCoordCubeArray(std::vector<float> &dst, tcu::CubeFace face, const tcu::Vec2 &bottomLeft,
const tcu::Vec2 &topRight, const tcu::Vec2 &layerRange)
{
int sRow = 0;
int tRow = 0;
int mRow = 0;
const int qRow = 3;
float sSign = 1.0f;
float tSign = 1.0f;
float mSign = 1.0f;
const float l0 = layerRange.x();
const float l1 = layerRange.y();
switch (face)
{
case tcu::CUBEFACE_NEGATIVE_X:
mRow = 0;
sRow = 2;
tRow = 1;
mSign = -1.0f;
tSign = -1.0f;
break;
case tcu::CUBEFACE_POSITIVE_X:
mRow = 0;
sRow = 2;
tRow = 1;
sSign = -1.0f;
tSign = -1.0f;
break;
case tcu::CUBEFACE_NEGATIVE_Y:
mRow = 1;
sRow = 0;
tRow = 2;
mSign = -1.0f;
tSign = -1.0f;
break;
case tcu::CUBEFACE_POSITIVE_Y:
mRow = 1;
sRow = 0;
tRow = 2;
break;
case tcu::CUBEFACE_NEGATIVE_Z:
mRow = 2;
sRow = 0;
tRow = 1;
mSign = -1.0f;
sSign = -1.0f;
tSign = -1.0f;
break;
case tcu::CUBEFACE_POSITIVE_Z:
mRow = 2;
sRow = 0;
tRow = 1;
tSign = -1.0f;
break;
default:
DE_ASSERT(false);
return;
}
dst.resize(4 * 4);
dst[0 + mRow] = mSign;
dst[4 + mRow] = mSign;
dst[8 + mRow] = mSign;
dst[12 + mRow] = mSign;
dst[0 + sRow] = sSign * bottomLeft.x();
dst[4 + sRow] = sSign * bottomLeft.x();
dst[8 + sRow] = sSign * topRight.x();
dst[12 + sRow] = sSign * topRight.x();
dst[0 + tRow] = tSign * bottomLeft.y();
dst[4 + tRow] = tSign * topRight.y();
dst[8 + tRow] = tSign * bottomLeft.y();
dst[12 + tRow] = tSign * topRight.y();
if (l0 != l1)
{
dst[0 + qRow] = l0;
dst[4 + qRow] = l0 * 0.5f + l1 * 0.5f;
dst[8 + qRow] = l0 * 0.5f + l1 * 0.5f;
dst[12 + qRow] = l1;
}
else
{
dst[0 + qRow] = l0;
dst[4 + qRow] = l0;
dst[8 + qRow] = l0;
dst[12 + qRow] = l0;
}
}
// Texture result verification
//! Verifies texture lookup results and returns number of failed pixels.
int computeTextureLookupDiff(const tcu::ConstPixelBufferAccess &result, const tcu::ConstPixelBufferAccess &reference,
const tcu::PixelBufferAccess &errorMask, const tcu::Texture1DView &baseView,
const float *texCoord, const ReferenceParams &sampleParams,
const tcu::LookupPrecision &lookupPrec, const tcu::LodPrecision &lodPrec,
qpWatchDog *watchDog)
{
DE_ASSERT(result.getWidth() == reference.getWidth() && result.getHeight() == reference.getHeight());
DE_ASSERT(result.getWidth() == errorMask.getWidth() && result.getHeight() == errorMask.getHeight());
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
const tcu::Texture1DView src =
getEffectiveTextureView(getSubView(baseView, sampleParams.baseLevel, sampleParams.maxLevel, DE_NULL),
srcLevelStorage, sampleParams.sampler);
const tcu::Vec4 sq = tcu::Vec4(texCoord[0], texCoord[1], texCoord[2], texCoord[3]);
const tcu::IVec2 dstSize = tcu::IVec2(result.getWidth(), result.getHeight());
const float dstW = float(dstSize.x());
const float dstH = float(dstSize.y());
const int srcSize = src.getWidth();
// Coordinates and lod per triangle.
const tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
const tcu::Vec3 triW[2] = {sampleParams.w.swizzle(0, 1, 2), sampleParams.w.swizzle(3, 2, 1)};
const tcu::Vec2 lodBias((sampleParams.flags & ReferenceParams::USE_BIAS) ? sampleParams.bias : 0.0f);
int numFailed = 0;
const tcu::Vec2 lodOffsets[] = {
tcu::Vec2(-1, 0),
tcu::Vec2(+1, 0),
tcu::Vec2(0, -1),
tcu::Vec2(0, +1),
};
tcu::clear(errorMask, tcu::RGBA::green().toVec());
for (int py = 0; py < result.getHeight(); py++)
{
// Ugly hack, validation can take way too long at the moment.
if (watchDog)
qpWatchDog_touch(watchDog);
for (int px = 0; px < result.getWidth(); px++)
{
const tcu::Vec4 resPix = (result.getPixel(px, py) - sampleParams.colorBias) / sampleParams.colorScale;
const tcu::Vec4 refPix = (reference.getPixel(px, py) - sampleParams.colorBias) / sampleParams.colorScale;
// Try comparison to ideal reference first, and if that fails use slower verificator.
if (!tcu::boolAll(tcu::lessThanEqual(tcu::abs(resPix - refPix), lookupPrec.colorThreshold)))
{
const float wx = (float)px + 0.5f;
const float wy = (float)py + 0.5f;
const float nx = wx / dstW;
const float ny = wy / dstH;
const int triNdx = nx + ny >= 1.0f ? 1 : 0;
const float triWx = triNdx ? dstW - wx : wx;
const float triWy = triNdx ? dstH - wy : wy;
const float triNx = triNdx ? 1.0f - nx : nx;
const float triNy = triNdx ? 1.0f - ny : ny;
const float coord = projectedTriInterpolate(triS[triNdx], triW[triNdx], triNx, triNy);
const float coordDx = triDerivateX(triS[triNdx], triW[triNdx], wx, dstW, triNy) * float(srcSize);
const float coordDy = triDerivateY(triS[triNdx], triW[triNdx], wy, dstH, triNx) * float(srcSize);
tcu::Vec2 lodBounds = tcu::computeLodBoundsFromDerivates(coordDx, coordDy, lodPrec);
// Compute lod bounds across lodOffsets range.
for (int lodOffsNdx = 0; lodOffsNdx < DE_LENGTH_OF_ARRAY(lodOffsets); lodOffsNdx++)
{
const float wxo = triWx + lodOffsets[lodOffsNdx].x();
const float wyo = triWy + lodOffsets[lodOffsNdx].y();
const float nxo = wxo / dstW;
const float nyo = wyo / dstH;
const float coordDxo = triDerivateX(triS[triNdx], triW[triNdx], wxo, dstW, nyo) * float(srcSize);
const float coordDyo = triDerivateY(triS[triNdx], triW[triNdx], wyo, dstH, nxo) * float(srcSize);
const tcu::Vec2 lodO = tcu::computeLodBoundsFromDerivates(coordDxo, coordDyo, lodPrec);
lodBounds.x() = de::min(lodBounds.x(), lodO.x());
lodBounds.y() = de::max(lodBounds.y(), lodO.y());
}
const tcu::Vec2 clampedLod = tcu::clampLodBounds(
lodBounds + lodBias, tcu::Vec2(sampleParams.minLod, sampleParams.maxLod), lodPrec);
const bool isOk =
tcu::isLookupResultValid(src, sampleParams.sampler, lookupPrec, coord, clampedLod, resPix);
if (!isOk)
{
errorMask.setPixel(tcu::RGBA::red().toVec(), px, py);
numFailed += 1;
}
}
}
}
return numFailed;
}
int computeTextureLookupDiff(const tcu::ConstPixelBufferAccess &result, const tcu::ConstPixelBufferAccess &reference,
const tcu::PixelBufferAccess &errorMask, const tcu::Texture2DView &baseView,
const float *texCoord, const ReferenceParams &sampleParams,
const tcu::LookupPrecision &lookupPrec, const tcu::LodPrecision &lodPrec,
qpWatchDog *watchDog)
{
DE_ASSERT(result.getWidth() == reference.getWidth() && result.getHeight() == reference.getHeight());
DE_ASSERT(result.getWidth() == errorMask.getWidth() && result.getHeight() == errorMask.getHeight());
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
tcu::ImageViewMinLodParams minLodParams = {
sampleParams.baseLevel, // int baseLevel;
{
sampleParams.imageViewMinLod, // float minLod;
sampleParams.imageViewMinLodMode, // ImageViewMinLodMode
},
sampleParams.samplerType == SAMPLERTYPE_FETCH_FLOAT // bool intTexCoord;
};
const tcu::Texture2DView view = getSubView(baseView, sampleParams.baseLevel, sampleParams.maxLevel,
sampleParams.imageViewMinLod != 0.0f ? &minLodParams : DE_NULL);
const tcu::Texture2DView src = getEffectiveTextureView(view, srcLevelStorage, sampleParams.sampler);
const tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[2 + 0], texCoord[4 + 0], texCoord[6 + 0]);
const tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[2 + 1], texCoord[4 + 1], texCoord[6 + 1]);
const tcu::IVec2 dstSize = tcu::IVec2(result.getWidth(), result.getHeight());
const float dstW = float(dstSize.x());
const float dstH = float(dstSize.y());
const tcu::IVec2 srcSize = tcu::IVec2(src.getWidth(), src.getHeight());
// Coordinates and lod per triangle.
const tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
const tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
const tcu::Vec3 triW[2] = {sampleParams.w.swizzle(0, 1, 2), sampleParams.w.swizzle(3, 2, 1)};
const tcu::Vec2 lodBias((sampleParams.flags & ReferenceParams::USE_BIAS) ? sampleParams.bias : 0.0f);
// imageViewMinLodRel is used to calculate the image level to sample from, when VK_EXT_image_view_min_lod extension is enabled.
// The value is relative to baseLevel as the Texture*View 'src' was created as the baseLevel being level[0].
const float imageViewMinLodRel = sampleParams.imageViewMinLod - (float)sampleParams.baseLevel;
// We need to adapt ImageView's minLod value to the mipmap mdoe (i.e. nearest or linear) so we clamp with the right minLod value later.
const float imageViewMinLodRelMode = tcu::isSamplerMipmapModeLinear(sampleParams.sampler.minFilter) ?
deFloatFloor(imageViewMinLodRel) :
(float)deClamp32((int)deFloatCeil(imageViewMinLodRel + 0.5f) - 1,
sampleParams.baseLevel, sampleParams.maxLevel);
const float minLod = (sampleParams.imageViewMinLod != 0.0f) ? de::max(imageViewMinLodRelMode, sampleParams.minLod) :
sampleParams.minLod;
const float posEps = 1.0f / float(1 << MIN_SUBPIXEL_BITS);
int numFailed = 0;
const tcu::Vec2 lodOffsets[] = {
tcu::Vec2(-1, 0),
tcu::Vec2(+1, 0),
tcu::Vec2(0, -1),
tcu::Vec2(0, +1),
};
tcu::clear(errorMask, tcu::RGBA::green().toVec());
for (int py = 0; py < result.getHeight(); py++)
{
// Ugly hack, validation can take way too long at the moment.
if (watchDog)
qpWatchDog_touch(watchDog);
for (int px = 0; px < result.getWidth(); px++)
{
const tcu::Vec4 resPix = (result.getPixel(px, py) - sampleParams.colorBias) / sampleParams.colorScale;
const tcu::Vec4 refPix = (reference.getPixel(px, py) - sampleParams.colorBias) / sampleParams.colorScale;
// Try comparison to ideal reference first, and if that fails use slower verificator.
if (!tcu::boolAll(tcu::lessThanEqual(tcu::abs(resPix - refPix), lookupPrec.colorThreshold)))
{
const float wx = (float)px + 0.5f;
const float wy = (float)py + 0.5f;
const float nx = wx / dstW;
const float ny = wy / dstH;
const bool tri0 = (wx - posEps) / dstW + (wy - posEps) / dstH <= 1.0f;
const bool tri1 = (wx + posEps) / dstW + (wy + posEps) / dstH >= 1.0f;
bool isOk = false;
DE_ASSERT(tri0 || tri1);
// Pixel can belong to either of the triangles if it lies close enough to the edge.
for (int triNdx = (tri0 ? 0 : 1); triNdx <= (tri1 ? 1 : 0); triNdx++)
{
const float triWx = triNdx ? dstW - wx : wx;
const float triWy = triNdx ? dstH - wy : wy;
const float triNx = triNdx ? 1.0f - nx : nx;
const float triNy = triNdx ? 1.0f - ny : ny;
const tcu::Vec2 coord(projectedTriInterpolate(triS[triNdx], triW[triNdx], triNx, triNy),
projectedTriInterpolate(triT[triNdx], triW[triNdx], triNx, triNy));
const tcu::Vec2 coordDx = tcu::Vec2(triDerivateX(triS[triNdx], triW[triNdx], wx, dstW, triNy),
triDerivateX(triT[triNdx], triW[triNdx], wx, dstW, triNy)) *
srcSize.asFloat();
const tcu::Vec2 coordDy = tcu::Vec2(triDerivateY(triS[triNdx], triW[triNdx], wy, dstH, triNx),
triDerivateY(triT[triNdx], triW[triNdx], wy, dstH, triNx)) *
srcSize.asFloat();
tcu::Vec2 lodBounds =
tcu::computeLodBoundsFromDerivates(coordDx.x(), coordDx.y(), coordDy.x(), coordDy.y(), lodPrec);
// Compute lod bounds across lodOffsets range.
for (int lodOffsNdx = 0; lodOffsNdx < DE_LENGTH_OF_ARRAY(lodOffsets); lodOffsNdx++)
{
const float wxo = triWx + lodOffsets[lodOffsNdx].x();
const float wyo = triWy + lodOffsets[lodOffsNdx].y();
const float nxo = wxo / dstW;
const float nyo = wyo / dstH;
const tcu::Vec2 coordDxo = tcu::Vec2(triDerivateX(triS[triNdx], triW[triNdx], wxo, dstW, nyo),
triDerivateX(triT[triNdx], triW[triNdx], wxo, dstW, nyo)) *
srcSize.asFloat();
const tcu::Vec2 coordDyo = tcu::Vec2(triDerivateY(triS[triNdx], triW[triNdx], wyo, dstH, nxo),
triDerivateY(triT[triNdx], triW[triNdx], wyo, dstH, nxo)) *
srcSize.asFloat();
const tcu::Vec2 lodO = tcu::computeLodBoundsFromDerivates(coordDxo.x(), coordDxo.y(),
coordDyo.x(), coordDyo.y(), lodPrec);
lodBounds.x() = de::min(lodBounds.x(), lodO.x());
lodBounds.y() = de::max(lodBounds.y(), lodO.y());
}
const tcu::Vec2 clampedLod =
tcu::clampLodBounds(lodBounds + lodBias, tcu::Vec2(minLod, sampleParams.maxLod), lodPrec);
if (tcu::isLookupResultValid(src, sampleParams.sampler, lookupPrec, coord, clampedLod, resPix))
{
isOk = true;
break;
}
}
if (!isOk)
{
errorMask.setPixel(tcu::RGBA::red().toVec(), px, py);
numFailed += 1;
}
}
}
}
return numFailed;
}
bool verifyTextureResult(tcu::TestContext &testCtx, const tcu::ConstPixelBufferAccess &result,
const tcu::Texture1DView &src, const float *texCoord, const ReferenceParams &sampleParams,
const tcu::LookupPrecision &lookupPrec, const tcu::LodPrecision &lodPrec,
const tcu::PixelFormat &pixelFormat)
{
tcu::TestLog &log = testCtx.getLog();
tcu::Surface reference(result.getWidth(), result.getHeight());
tcu::Surface errorMask(result.getWidth(), result.getHeight());
int numFailedPixels;
DE_ASSERT(getCompareMask(pixelFormat) == lookupPrec.colorMask);
sampleTexture(tcu::SurfaceAccess(reference, pixelFormat), src, texCoord, sampleParams);
numFailedPixels = computeTextureLookupDiff(result, reference.getAccess(), errorMask.getAccess(), src, texCoord,
sampleParams, lookupPrec, lodPrec, testCtx.getWatchDog());
if (numFailedPixels > 0)
log << tcu::TestLog::Message << "ERROR: Result verification failed, got " << numFailedPixels
<< " invalid pixels!" << tcu::TestLog::EndMessage;
log << tcu::TestLog::ImageSet("VerifyResult", "Verification result")
<< tcu::TestLog::Image("Rendered", "Rendered image", result);
if (numFailedPixels > 0)
{
log << tcu::TestLog::Image("Reference", "Ideal reference image", reference)
<< tcu::TestLog::Image("ErrorMask", "Error mask", errorMask);
}
log << tcu::TestLog::EndImageSet;
return numFailedPixels == 0;
}
bool verifyTextureResult(tcu::TestContext &testCtx, const tcu::ConstPixelBufferAccess &result,
const tcu::Texture2DView &src, const float *texCoord, const ReferenceParams &sampleParams,
const tcu::LookupPrecision &lookupPrec, const tcu::LodPrecision &lodPrec,
const tcu::PixelFormat &pixelFormat)
{
tcu::TestLog &log = testCtx.getLog();
tcu::Surface reference(result.getWidth(), result.getHeight());
tcu::Surface errorMask(result.getWidth(), result.getHeight());
int numFailedPixels;
DE_ASSERT(getCompareMask(pixelFormat) == lookupPrec.colorMask);
sampleTexture(tcu::SurfaceAccess(reference, pixelFormat), src, texCoord, sampleParams);
numFailedPixels = computeTextureLookupDiff(result, reference.getAccess(), errorMask.getAccess(), src, texCoord,
sampleParams, lookupPrec, lodPrec, testCtx.getWatchDog());
if (numFailedPixels > 0)
log << tcu::TestLog::Message << "ERROR: Result verification failed, got " << numFailedPixels
<< " invalid pixels!" << tcu::TestLog::EndMessage;
log << tcu::TestLog::ImageSet("VerifyResult", "Verification result")
<< tcu::TestLog::Image("Rendered", "Rendered image", result);
if (numFailedPixels > 0)
{
log << tcu::TestLog::Image("Reference", "Ideal reference image", reference)
<< tcu::TestLog::Image("ErrorMask", "Error mask", errorMask);
}
log << tcu::TestLog::EndImageSet;
return numFailedPixels == 0;
}
//! Verifies texture lookup results and returns number of failed pixels.
int computeTextureLookupDiff(const tcu::ConstPixelBufferAccess &result, const tcu::ConstPixelBufferAccess &reference,
const tcu::PixelBufferAccess &errorMask, const tcu::TextureCubeView &baseView,
const float *texCoord, const ReferenceParams &sampleParams,
const tcu::LookupPrecision &lookupPrec, const tcu::LodPrecision &lodPrec,
qpWatchDog *watchDog)
{
DE_ASSERT(result.getWidth() == reference.getWidth() && result.getHeight() == reference.getHeight());
DE_ASSERT(result.getWidth() == errorMask.getWidth() && result.getHeight() == errorMask.getHeight());
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
tcu::ImageViewMinLodParams minLodParams = {
sampleParams.baseLevel, // int baseLevel;
{
sampleParams.imageViewMinLod, // float minLod;
sampleParams.imageViewMinLodMode, // ImageViewMinLodMode
},
sampleParams.samplerType == SAMPLERTYPE_FETCH_FLOAT // bool intTexCoord;
};
const tcu::TextureCubeView src =
getEffectiveTextureView(getSubView(baseView, sampleParams.baseLevel, sampleParams.maxLevel,
sampleParams.imageViewMinLod != 0.0f ? &minLodParams : DE_NULL),
srcLevelStorage, sampleParams.sampler);
const tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[3 + 0], texCoord[6 + 0], texCoord[9 + 0]);
const tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[3 + 1], texCoord[6 + 1], texCoord[9 + 1]);
const tcu::Vec4 rq = tcu::Vec4(texCoord[0 + 2], texCoord[3 + 2], texCoord[6 + 2], texCoord[9 + 2]);
const tcu::IVec2 dstSize = tcu::IVec2(result.getWidth(), result.getHeight());
const float dstW = float(dstSize.x());
const float dstH = float(dstSize.y());
const int srcSize = src.getSize();
// Coordinates per triangle.
const tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
const tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
const tcu::Vec3 triR[2] = {rq.swizzle(0, 1, 2), rq.swizzle(3, 2, 1)};
const tcu::Vec3 triW[2] = {sampleParams.w.swizzle(0, 1, 2), sampleParams.w.swizzle(3, 2, 1)};
const tcu::Vec2 lodBias((sampleParams.flags & ReferenceParams::USE_BIAS) ? sampleParams.bias : 0.0f);
const float posEps = 1.0f / float(1 << MIN_SUBPIXEL_BITS);
// imageViewMinLodRel is used to calculate the image level to sample from, when VK_EXT_image_view_min_lod extension is enabled.
// The value is relative to baseLevel as the Texture*View 'src' was created as the baseLevel being level[0].
const float imageViewMinLodRel = sampleParams.imageViewMinLod - (float)sampleParams.baseLevel;
// We need to adapt ImageView's minLod value to the mipmap mdoe (i.e. nearest or linear) so we clamp with the right minLod value later.
const float imageViewMinLodRelMode = tcu::isSamplerMipmapModeLinear(sampleParams.sampler.minFilter) ?
deFloatFloor(imageViewMinLodRel) :
(float)deClamp32((int)deFloatCeil(imageViewMinLodRel + 0.5f) - 1,
sampleParams.baseLevel, sampleParams.maxLevel);
const float minLod = (sampleParams.imageViewMinLod != 0.0f) ? de::max(imageViewMinLodRelMode, sampleParams.minLod) :
sampleParams.minLod;
int numFailed = 0;
const tcu::Vec2 lodOffsets[] = {
tcu::Vec2(-1, 0),
tcu::Vec2(+1, 0),
tcu::Vec2(0, -1),
tcu::Vec2(0, +1),
// \note Not strictly allowed by spec, but implementations do this in practice.
tcu::Vec2(-1, -1),
tcu::Vec2(-1, +1),
tcu::Vec2(+1, -1),
tcu::Vec2(+1, +1),
};
tcu::clear(errorMask, tcu::RGBA::green().toVec());
for (int py = 0; py < result.getHeight(); py++)
{
// Ugly hack, validation can take way too long at the moment.
if (watchDog)
qpWatchDog_touch(watchDog);
for (int px = 0; px < result.getWidth(); px++)
{
const tcu::Vec4 resPix = (result.getPixel(px, py) - sampleParams.colorBias) / sampleParams.colorScale;
const tcu::Vec4 refPix = (reference.getPixel(px, py) - sampleParams.colorBias) / sampleParams.colorScale;
// Try comparison to ideal reference first, and if that fails use slower verificator.
if (!tcu::boolAll(tcu::lessThanEqual(tcu::abs(resPix - refPix), lookupPrec.colorThreshold)))
{
const float wx = (float)px + 0.5f;
const float wy = (float)py + 0.5f;
const float nx = wx / dstW;
const float ny = wy / dstH;
const bool tri0 = (wx - posEps) / dstW + (wy - posEps) / dstH <= 1.0f;
const bool tri1 = (wx + posEps) / dstW + (wy + posEps) / dstH >= 1.0f;
bool isOk = false;
DE_ASSERT(tri0 || tri1);
// Pixel can belong to either of the triangles if it lies close enough to the edge.
for (int triNdx = (tri0 ? 0 : 1); triNdx <= (tri1 ? 1 : 0); triNdx++)
{
const float triWx = triNdx ? dstW - wx : wx;
const float triWy = triNdx ? dstH - wy : wy;
const float triNx = triNdx ? 1.0f - nx : nx;
const float triNy = triNdx ? 1.0f - ny : ny;
const tcu::Vec3 coord(projectedTriInterpolate(triS[triNdx], triW[triNdx], triNx, triNy),
projectedTriInterpolate(triT[triNdx], triW[triNdx], triNx, triNy),
projectedTriInterpolate(triR[triNdx], triW[triNdx], triNx, triNy));
const tcu::Vec3 coordDx(triDerivateX(triS[triNdx], triW[triNdx], wx, dstW, triNy),
triDerivateX(triT[triNdx], triW[triNdx], wx, dstW, triNy),
triDerivateX(triR[triNdx], triW[triNdx], wx, dstW, triNy));
const tcu::Vec3 coordDy(triDerivateY(triS[triNdx], triW[triNdx], wy, dstH, triNx),
triDerivateY(triT[triNdx], triW[triNdx], wy, dstH, triNx),
triDerivateY(triR[triNdx], triW[triNdx], wy, dstH, triNx));
tcu::Vec2 lodBounds =
tcu::computeCubeLodBoundsFromDerivates(coord, coordDx, coordDy, srcSize, lodPrec);
// Compute lod bounds across lodOffsets range.
for (int lodOffsNdx = 0; lodOffsNdx < DE_LENGTH_OF_ARRAY(lodOffsets); lodOffsNdx++)
{
const float wxo = triWx + lodOffsets[lodOffsNdx].x();
const float wyo = triWy + lodOffsets[lodOffsNdx].y();
const float nxo = wxo / dstW;
const float nyo = wyo / dstH;
const tcu::Vec3 coordO(projectedTriInterpolate(triS[triNdx], triW[triNdx], nxo, nyo),
projectedTriInterpolate(triT[triNdx], triW[triNdx], nxo, nyo),
projectedTriInterpolate(triR[triNdx], triW[triNdx], nxo, nyo));
const tcu::Vec3 coordDxo(triDerivateX(triS[triNdx], triW[triNdx], wxo, dstW, nyo),
triDerivateX(triT[triNdx], triW[triNdx], wxo, dstW, nyo),
triDerivateX(triR[triNdx], triW[triNdx], wxo, dstW, nyo));
const tcu::Vec3 coordDyo(triDerivateY(triS[triNdx], triW[triNdx], wyo, dstH, nxo),
triDerivateY(triT[triNdx], triW[triNdx], wyo, dstH, nxo),
triDerivateY(triR[triNdx], triW[triNdx], wyo, dstH, nxo));
const tcu::Vec2 lodO =
tcu::computeCubeLodBoundsFromDerivates(coordO, coordDxo, coordDyo, srcSize, lodPrec);
lodBounds.x() = de::min(lodBounds.x(), lodO.x());
lodBounds.y() = de::max(lodBounds.y(), lodO.y());
}
const tcu::Vec2 clampedLod =
tcu::clampLodBounds(lodBounds + lodBias, tcu::Vec2(minLod, sampleParams.maxLod), lodPrec);
if (tcu::isLookupResultValid(src, sampleParams.sampler, lookupPrec, coord, clampedLod, resPix))
{
isOk = true;
break;
}
}
if (!isOk)
{
errorMask.setPixel(tcu::RGBA::red().toVec(), px, py);
numFailed += 1;
}
}
}
}
return numFailed;
}
bool verifyTextureResult(tcu::TestContext &testCtx, const tcu::ConstPixelBufferAccess &result,
const tcu::TextureCubeView &src, const float *texCoord, const ReferenceParams &sampleParams,
const tcu::LookupPrecision &lookupPrec, const tcu::LodPrecision &lodPrec,
const tcu::PixelFormat &pixelFormat)
{
tcu::TestLog &log = testCtx.getLog();
tcu::Surface reference(result.getWidth(), result.getHeight());
tcu::Surface errorMask(result.getWidth(), result.getHeight());
int numFailedPixels;
DE_ASSERT(getCompareMask(pixelFormat) == lookupPrec.colorMask);
sampleTexture(tcu::SurfaceAccess(reference, pixelFormat), src, texCoord, sampleParams);
numFailedPixels = computeTextureLookupDiff(result, reference.getAccess(), errorMask.getAccess(), src, texCoord,
sampleParams, lookupPrec, lodPrec, testCtx.getWatchDog());
if (numFailedPixels > 0)
log << tcu::TestLog::Message << "ERROR: Result verification failed, got " << numFailedPixels
<< " invalid pixels!" << tcu::TestLog::EndMessage;
log << tcu::TestLog::ImageSet("VerifyResult", "Verification result")
<< tcu::TestLog::Image("Rendered", "Rendered image", result);
if (numFailedPixels > 0)
{
log << tcu::TestLog::Image("Reference", "Ideal reference image", reference)
<< tcu::TestLog::Image("ErrorMask", "Error mask", errorMask);
}
log << tcu::TestLog::EndImageSet;
return numFailedPixels == 0;
}
//! Verifies texture lookup results and returns number of failed pixels.
int computeTextureLookupDiff(const tcu::ConstPixelBufferAccess &result, const tcu::ConstPixelBufferAccess &reference,
const tcu::PixelBufferAccess &errorMask, const tcu::Texture3DView &baseView,
const float *texCoord, const ReferenceParams &sampleParams,
const tcu::LookupPrecision &lookupPrec, const tcu::LodPrecision &lodPrec,
qpWatchDog *watchDog)
{
DE_ASSERT(result.getWidth() == reference.getWidth() && result.getHeight() == reference.getHeight());
DE_ASSERT(result.getWidth() == errorMask.getWidth() && result.getHeight() == errorMask.getHeight());
std::vector<tcu::ConstPixelBufferAccess> srcLevelStorage;
tcu::ImageViewMinLodParams minLodParams = {
sampleParams.baseLevel, // int baseLevel;
{
sampleParams.imageViewMinLod, // float minLod;
sampleParams.imageViewMinLodMode, // ImageViewMinLodMode
},
sampleParams.samplerType == SAMPLERTYPE_FETCH_FLOAT // bool intTexCoord;
};
const tcu::Texture3DView src =
getEffectiveTextureView(getSubView(baseView, sampleParams.baseLevel, sampleParams.maxLevel,
sampleParams.imageViewMinLod != 0.0f ? &minLodParams : DE_NULL),
srcLevelStorage, sampleParams.sampler);
const tcu::Vec4 sq = tcu::Vec4(texCoord[0 + 0], texCoord[3 + 0], texCoord[6 + 0], texCoord[9 + 0]);
const tcu::Vec4 tq = tcu::Vec4(texCoord[0 + 1], texCoord[3 + 1], texCoord[6 + 1], texCoord[9 + 1]);
const tcu::Vec4 rq = tcu::Vec4(texCoord[0 + 2], texCoord[3 + 2], texCoord[6 + 2], texCoord[9 + 2]);
const tcu::IVec2 dstSize = tcu::IVec2(result.getWidth(), result.getHeight());
const float dstW = float(dstSize.x());
const float dstH = float(dstSize.y());
const tcu::IVec3 srcSize = tcu::IVec3(src.getWidth(), src.getHeight(), src.getDepth());
// Coordinates and lod per triangle.
const tcu::Vec3 triS[2] = {sq.swizzle(0, 1, 2), sq.swizzle(3, 2, 1)};
const tcu::Vec3 triT[2] = {tq.swizzle(0, 1, 2), tq.swizzle(3, 2, 1)};
const tcu::Vec3 triR[2] = {rq.swizzle(0, 1, 2), rq.swizzle(3, 2, 1)};
const tcu::Vec3 triW[2] = {sampleParams.w.swizzle(0, 1, 2), sampleParams.w.swizzle(3, 2, 1)};
const tcu::Vec2 lodBias((sampleParams.flags & ReferenceParams::USE_BIAS) ? sampleParams.bias : 0.0f);
// imageViewMinLodRel is used to calculate the image level to sample from, when VK_EXT_image_view_min_lod extension is enabled.
// The value is relative to baseLevel as the Texture*View 'src' was created as the baseLevel being level[0].
const float imageViewMinLodRel = sampleParams.imageViewMinLod - (float)sampleParams.baseLevel;
// We need to adapt ImageView's minLod value to the mipmap mdoe (i.e. nearest or linear) so we clamp with the right minLod value later.
const float imageViewMinLodRelMode = tcu::isSamplerMipmapModeLinear(sampleParams.sampler.minFilter) ?
deFloatFloor(imageViewMinLodRel) :
(float)deClamp32((int)deFloatCeil(imageViewMinLodRel + 0.5f) - 1,
sampleParams.baseLevel, sampleParams.maxLevel);
const float minLod = (sampleParams.imageViewMinLod != 0.0f) ? de::max(imageViewMinLodRelMode, sampleParams.minLod) :
sampleParams.minLod;
const float posEps = 1.0f / float(1 << MIN_SUBPIXEL_BITS);
int numFailed = 0;
const tcu::Vec2 lodOffsets[] = {
tcu::Vec2(-1, 0),
tcu::Vec2(+1, 0),
tcu::Vec2(0, -1),
tcu::Vec2(0, +1),
};
tcu::clear(errorMask, tcu::RGBA::green().toVec());
for (int py = 0; py < result.getHeight(); py++)
{
// Ugly hack, validation can take way too long at the moment.
if (watchDog)
qpWatchDog_touch(watchDog);
for (int px = 0; px < result.getWidth(); px++)
{
const tcu::Vec4 resPix = (result.getPixel(px, py) - sampleParams.colorBias) / sampleParams.colorScale;
const tcu::Vec4 refPix = (reference.getPixel(px, py) - sampleParams.colorBias) / sampleParams.colorScale;
// Try comparison to ideal reference first, and if that fails use slower verificator.
if (!tcu::boolAll(tcu::lessThanEqual(tcu::abs(resPix - refPix), lookupPrec.colorThreshold)))
{
const float wx = (float)px + 0.5f;
const float wy = (float)py + 0.5f;
const float nx = wx / dstW;
const float ny = wy / dstH;
const bool tri0 = (wx - posEps) / dstW + (wy - posEps) / dstH <= 1.0f;
const bool tri1 = (wx + posEps) / dstW + (wy + posEps) / dstH >= 1.0f;
bool isOk = false;
DE_ASSERT(tri0 || tri1);
// Pixel can belong to either of the triangles if it lies close enough to the edge.
for (int triNdx = (tri0 ? 0 : 1); triNdx <= (tri1 ? 1 : 0); triNdx++)
{
const float triWx = triNdx ? dstW - wx : wx;
const float triWy = triNdx ? dstH - wy : wy;
const float triNx = triNdx ? 1.0f - nx : nx;
const float triNy = triNdx ? 1.0f - ny : ny;
const tcu::Vec3 coord(projectedTriInterpolate(triS[triNdx], triW[triNdx], triNx, triNy),
projectedTriInterpolate(triT[triNdx], triW[triNdx], triNx, triNy),
projectedTriInterpolate(triR[triNdx], triW[triNdx], triNx, triNy));
const tcu::Vec3 coordDx = tcu::Vec3(triDerivateX(triS[triNdx], triW[triNdx], wx, dstW, triNy),
triDerivateX(triT[triNdx], triW[triNdx], wx, dstW, triNy),
triDerivateX(triR[triNdx], triW[triNdx], wx, dstW, triNy)) *
srcSize.asFloat();
const tcu::Vec3 coordDy = tcu::Vec3(triDerivateY(triS[triNdx], triW[triNdx], wy, dstH, triNx),
triDerivateY(triT[triNdx], triW[triNdx], wy, dstH, triNx),
triDerivateY(triR[triNdx], triW[triNdx], wy, dstH, triNx)) *
srcSize.asFloat();
tcu::Vec2 lodBounds = tcu::computeLodBoundsFromDerivates(
coordDx.x(), coordDx.y(), coordDx.z(), coordDy.x(), coordDy.y(), coordDy.z(), lodPrec);
// Compute lod bounds across lodOffsets range.
for (int lodOffsNdx = 0; lodOffsNdx < DE_LENGTH_OF_ARRAY(lodOffsets); lodOffsNdx++)
{
const float wxo = triWx + lodOffsets[lodOffsNdx].x();
const float wyo = triWy + lodOffsets[lodOffsNdx].y();
const float nxo = wxo / dstW;
const float nyo = wyo / dstH;
const tcu::Vec3 coordDxo = tcu::Vec3(triDerivateX(triS[triNdx], triW[triNdx], wxo, dstW, nyo),
triDerivateX(triT[triNdx], triW[triNdx], wxo, dstW, nyo),
triDerivateX(triR[triNdx], triW[triNdx], wxo, dstW, nyo)) *
srcSize.asFloat();
const tcu::Vec3 coordDyo = tcu::Vec3(triDerivateY(triS[triNdx], triW[triNdx], wyo, dstH, nxo),
triDerivateY(triT[triNdx], triW[triNdx], wyo, dstH, nxo),
triDerivateY(triR[triNdx], triW[triNdx], wyo, dstH, nxo)) *
srcSize.asFloat();
const tcu::Vec2 lodO =
tcu::computeLodBoundsFromDerivates(coordDxo.x(), coordDxo.y(), coordDxo.z(), coordDyo.x(),
coordDyo.y(), coordDyo.z(), lodPrec);
lodBounds.x() = de::min(lodBounds.x(), lodO.x());
lodBounds.y() = de::max(lodBounds.y(), lodO.y());
}
const tcu::Vec2 clampedLod =
tcu::clampLodBounds(lodBounds + lodBias, tcu::Vec2(minLod, sampleParams.maxLod), lodPrec);
if (tcu::isLookupResultValid(src, sampleParams.sampler, lookupPrec, coord, clampedLod, resPix))
{
isOk = true;
break;
}
}
if (!isOk)
{
errorMask.setPixel(tcu::RGBA::red().toVec(), px, py);
numFailed += 1;
}
}
}
}