src/libGLESv2/renderer/d3d11/renderer11_utils.cpp - platform/external/chromium_org/third_party/angle - Git at Google

 #include "precompiled.h"
 //
 // Copyright (c) 2012-2014 The ANGLE Project Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //

 // renderer11_utils.cpp: Conversion functions and other utility routines
 // specific to the D3D11 renderer.

 #include "libGLESv2/renderer/d3d11/renderer11_utils.h"
 #include "libGLESv2/renderer/d3d11/formatutils11.h"
 #include "common/debug.h"

 namespace rx
 {

 namespace gl_d3d11
 {

 D3D11_BLEND ConvertBlendFunc(GLenum glBlend, bool isAlpha)
 {
     D3D11_BLEND d3dBlend = D3D11_BLEND_ZERO;

     switch (glBlend)
     {
       case GL_ZERO:                     d3dBlend = D3D11_BLEND_ZERO;                break;
       case GL_ONE:                      d3dBlend = D3D11_BLEND_ONE;                 break;
       case GL_SRC_COLOR:                d3dBlend = (isAlpha ? D3D11_BLEND_SRC_ALPHA : D3D11_BLEND_SRC_COLOR);           break;
       case GL_ONE_MINUS_SRC_COLOR:      d3dBlend = (isAlpha ? D3D11_BLEND_INV_SRC_ALPHA : D3D11_BLEND_INV_SRC_COLOR);   break;
       case GL_DST_COLOR:                d3dBlend = (isAlpha ? D3D11_BLEND_DEST_ALPHA : D3D11_BLEND_DEST_COLOR);         break;
       case GL_ONE_MINUS_DST_COLOR:      d3dBlend = (isAlpha ? D3D11_BLEND_INV_DEST_ALPHA : D3D11_BLEND_INV_DEST_COLOR); break;
       case GL_SRC_ALPHA:                d3dBlend = D3D11_BLEND_SRC_ALPHA;           break;
       case GL_ONE_MINUS_SRC_ALPHA:      d3dBlend = D3D11_BLEND_INV_SRC_ALPHA;       break;
       case GL_DST_ALPHA:                d3dBlend = D3D11_BLEND_DEST_ALPHA;          break;
       case GL_ONE_MINUS_DST_ALPHA:      d3dBlend = D3D11_BLEND_INV_DEST_ALPHA;      break;
       case GL_CONSTANT_COLOR:           d3dBlend = D3D11_BLEND_BLEND_FACTOR;        break;
       case GL_ONE_MINUS_CONSTANT_COLOR: d3dBlend = D3D11_BLEND_INV_BLEND_FACTOR;    break;
       case GL_CONSTANT_ALPHA:           d3dBlend = D3D11_BLEND_BLEND_FACTOR;        break;
       case GL_ONE_MINUS_CONSTANT_ALPHA: d3dBlend = D3D11_BLEND_INV_BLEND_FACTOR;    break;
       case GL_SRC_ALPHA_SATURATE:       d3dBlend = D3D11_BLEND_SRC_ALPHA_SAT;       break;
       default: UNREACHABLE();
     }

     return d3dBlend;
 }

 D3D11_BLEND_OP ConvertBlendOp(GLenum glBlendOp)
 {
     D3D11_BLEND_OP d3dBlendOp = D3D11_BLEND_OP_ADD;

     switch (glBlendOp)
     {
       case GL_FUNC_ADD:              d3dBlendOp = D3D11_BLEND_OP_ADD;           break;
       case GL_FUNC_SUBTRACT:         d3dBlendOp = D3D11_BLEND_OP_SUBTRACT;      break;
       case GL_FUNC_REVERSE_SUBTRACT: d3dBlendOp = D3D11_BLEND_OP_REV_SUBTRACT;  break;
       case GL_MIN:                   d3dBlendOp = D3D11_BLEND_OP_MIN;           break;
       case GL_MAX:                   d3dBlendOp = D3D11_BLEND_OP_MAX;           break;
       default: UNREACHABLE();
     }

     return d3dBlendOp;
 }

 UINT8 ConvertColorMask(bool red, bool green, bool blue, bool alpha)
 {
     UINT8 mask = 0;
     if (red)
     {
         mask |= D3D11_COLOR_WRITE_ENABLE_RED;
     }
     if (green)
     {
         mask |= D3D11_COLOR_WRITE_ENABLE_GREEN;
     }
     if (blue)
     {
         mask |= D3D11_COLOR_WRITE_ENABLE_BLUE;
     }
     if (alpha)
     {
         mask |= D3D11_COLOR_WRITE_ENABLE_ALPHA;
     }
     return mask;
 }

 D3D11_CULL_MODE ConvertCullMode(bool cullEnabled, GLenum cullMode)
 {
     D3D11_CULL_MODE cull = D3D11_CULL_NONE;

     if (cullEnabled)
     {
         switch (cullMode)
         {
           case GL_FRONT:            cull = D3D11_CULL_FRONT;    break;
           case GL_BACK:             cull = D3D11_CULL_BACK;     break;
           case GL_FRONT_AND_BACK:   cull = D3D11_CULL_NONE;     break;
           default: UNREACHABLE();
         }
     }
     else
     {
         cull = D3D11_CULL_NONE;
     }

     return cull;
 }

 D3D11_COMPARISON_FUNC ConvertComparison(GLenum comparison)
 {
     D3D11_COMPARISON_FUNC d3dComp = D3D11_COMPARISON_NEVER;
     switch (comparison)
     {
       case GL_NEVER:    d3dComp = D3D11_COMPARISON_NEVER;           break;
       case GL_ALWAYS:   d3dComp = D3D11_COMPARISON_ALWAYS;          break;
       case GL_LESS:     d3dComp = D3D11_COMPARISON_LESS;            break;
       case GL_LEQUAL:   d3dComp = D3D11_COMPARISON_LESS_EQUAL;      break;
       case GL_EQUAL:    d3dComp = D3D11_COMPARISON_EQUAL;           break;
       case GL_GREATER:  d3dComp = D3D11_COMPARISON_GREATER;         break;
       case GL_GEQUAL:   d3dComp = D3D11_COMPARISON_GREATER_EQUAL;   break;
       case GL_NOTEQUAL: d3dComp = D3D11_COMPARISON_NOT_EQUAL;       break;
       default: UNREACHABLE();
     }

     return d3dComp;
 }

 D3D11_DEPTH_WRITE_MASK ConvertDepthMask(bool depthWriteEnabled)
 {
     return depthWriteEnabled ? D3D11_DEPTH_WRITE_MASK_ALL : D3D11_DEPTH_WRITE_MASK_ZERO;
 }

 UINT8 ConvertStencilMask(GLuint stencilmask)
 {
     return static_cast<UINT8>(stencilmask);
 }

 D3D11_STENCIL_OP ConvertStencilOp(GLenum stencilOp)
 {
     D3D11_STENCIL_OP d3dStencilOp = D3D11_STENCIL_OP_KEEP;

     switch (stencilOp)
     {
       case GL_ZERO:      d3dStencilOp = D3D11_STENCIL_OP_ZERO;      break;
       case GL_KEEP:      d3dStencilOp = D3D11_STENCIL_OP_KEEP;      break;
       case GL_REPLACE:   d3dStencilOp = D3D11_STENCIL_OP_REPLACE;   break;
       case GL_INCR:      d3dStencilOp = D3D11_STENCIL_OP_INCR_SAT;  break;
       case GL_DECR:      d3dStencilOp = D3D11_STENCIL_OP_DECR_SAT;  break;
       case GL_INVERT:    d3dStencilOp = D3D11_STENCIL_OP_INVERT;    break;
       case GL_INCR_WRAP: d3dStencilOp = D3D11_STENCIL_OP_INCR;      break;
       case GL_DECR_WRAP: d3dStencilOp = D3D11_STENCIL_OP_DECR;      break;
       default: UNREACHABLE();
     }

     return d3dStencilOp;
 }

 D3D11_FILTER ConvertFilter(GLenum minFilter, GLenum magFilter, float maxAnisotropy, GLenum comparisonMode)
 {
     bool comparison = comparisonMode != GL_NONE;

     if (maxAnisotropy > 1.0f)
     {
         return D3D11_ENCODE_ANISOTROPIC_FILTER(static_cast<D3D11_COMPARISON_FUNC>(comparison));
     }
     else
     {
         D3D11_FILTER_TYPE dxMin = D3D11_FILTER_TYPE_POINT;
         D3D11_FILTER_TYPE dxMip = D3D11_FILTER_TYPE_POINT;
         switch (minFilter)
         {
           case GL_NEAREST:                dxMin = D3D11_FILTER_TYPE_POINT;  dxMip = D3D11_FILTER_TYPE_POINT;  break;
           case GL_LINEAR:                 dxMin = D3D11_FILTER_TYPE_LINEAR; dxMip = D3D11_FILTER_TYPE_POINT;  break;
           case GL_NEAREST_MIPMAP_NEAREST: dxMin = D3D11_FILTER_TYPE_POINT;  dxMip = D3D11_FILTER_TYPE_POINT;  break;
           case GL_LINEAR_MIPMAP_NEAREST:  dxMin = D3D11_FILTER_TYPE_LINEAR; dxMip = D3D11_FILTER_TYPE_POINT;  break;
           case GL_NEAREST_MIPMAP_LINEAR:  dxMin = D3D11_FILTER_TYPE_POINT;  dxMip = D3D11_FILTER_TYPE_LINEAR; break;
           case GL_LINEAR_MIPMAP_LINEAR:   dxMin = D3D11_FILTER_TYPE_LINEAR; dxMip = D3D11_FILTER_TYPE_LINEAR; break;
           default:                        UNREACHABLE();
         }

         D3D11_FILTER_TYPE dxMag = D3D11_FILTER_TYPE_POINT;
         switch (magFilter)
         {
           case GL_NEAREST: dxMag = D3D11_FILTER_TYPE_POINT;  break;
           case GL_LINEAR:  dxMag = D3D11_FILTER_TYPE_LINEAR; break;
           default:         UNREACHABLE();
         }

         return D3D11_ENCODE_BASIC_FILTER(dxMin, dxMag, dxMip, static_cast<D3D11_COMPARISON_FUNC>(comparison));
     }
 }

 D3D11_TEXTURE_ADDRESS_MODE ConvertTextureWrap(GLenum wrap)
 {
     switch (wrap)
     {
       case GL_REPEAT:          return D3D11_TEXTURE_ADDRESS_WRAP;
       case GL_CLAMP_TO_EDGE:   return D3D11_TEXTURE_ADDRESS_CLAMP;
       case GL_MIRRORED_REPEAT: return D3D11_TEXTURE_ADDRESS_MIRROR;
       default:                 UNREACHABLE();
     }

     return D3D11_TEXTURE_ADDRESS_WRAP;
 }

 D3D11_QUERY ConvertQueryType(GLenum queryType)
 {
     switch (queryType)
     {
       case GL_ANY_SAMPLES_PASSED_EXT:
       case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT:   return D3D11_QUERY_OCCLUSION;
       case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: return D3D11_QUERY_SO_STATISTICS;
       default: UNREACHABLE();                        return D3D11_QUERY_EVENT;
     }
 }

 }


 namespace d3d11_gl
 {

 static gl::TextureCaps GenerateTextureFormatCaps(GLenum internalFormat, GLuint clientVersion, ID3D11Device *device)
 {
     gl::TextureCaps textureCaps;

     DXGI_FORMAT textureFormat = gl_d3d11::GetTexFormat(internalFormat, clientVersion);
     DXGI_FORMAT srvFormat = gl_d3d11::GetSRVFormat(internalFormat, clientVersion);
     DXGI_FORMAT rtvFormat = gl_d3d11::GetRTVFormat(internalFormat, clientVersion);
     DXGI_FORMAT dsvFormat = gl_d3d11::GetDSVFormat(internalFormat, clientVersion);
     DXGI_FORMAT renderFormat = gl_d3d11::GetRenderableFormat(internalFormat, clientVersion);

     UINT formatSupport;
     if (SUCCEEDED(device->CheckFormatSupport(textureFormat, &formatSupport)))
     {
         textureCaps.texture2D = (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURE2D) != 0;
         textureCaps.textureCubeMap = (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURECUBE) != 0;
         textureCaps.texture3D = (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURE3D) != 0;
         textureCaps.texture2DArray = (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURE2D) != 0;
     }

     if (SUCCEEDED(device->CheckFormatSupport(renderFormat, &formatSupport)) &&
         (formatSupport & D3D11_FORMAT_SUPPORT_MULTISAMPLE_RENDERTARGET))
     {
         for (size_t sampleCount = 1; sampleCount <= D3D11_MAX_MULTISAMPLE_SAMPLE_COUNT; sampleCount++)
         {
             UINT qualityCount = 0;
             if (SUCCEEDED(device->CheckMultisampleQualityLevels(renderFormat, sampleCount, &qualityCount)) &&
                 qualityCount > 0)
             {
                 textureCaps.sampleCounts.insert(sampleCount);
             }
         }
     }

     if (SUCCEEDED(device->CheckFormatSupport(srvFormat, &formatSupport)))
     {
         textureCaps.filtering = (formatSupport & D3D11_FORMAT_SUPPORT_SHADER_SAMPLE) != 0;
     }

     if (SUCCEEDED(device->CheckFormatSupport(rtvFormat, &formatSupport)))
     {
         textureCaps.colorRendering = (formatSupport & D3D11_FORMAT_SUPPORT_RENDER_TARGET) != 0;
     }

     if (SUCCEEDED(device->CheckFormatSupport(dsvFormat, &formatSupport)))
     {
         textureCaps.depthRendering = gl::GetDepthBits(internalFormat, clientVersion) > 0 &&
                                      (formatSupport & D3D11_FORMAT_SUPPORT_DEPTH_STENCIL) != 0;
         textureCaps.stencilRendering = gl::GetStencilBits(internalFormat, clientVersion) > 0 &&
                                        (formatSupport & D3D11_FORMAT_SUPPORT_DEPTH_STENCIL) != 0;
     }

     return textureCaps;
 }

 gl::Caps GenerateCaps(ID3D11Device *device)
 {
     gl::Caps caps;

     const GLuint maxClientVersion = 3;
     const gl::FormatSet &allFormats = gl::GetAllSizedInternalFormats(maxClientVersion);
     for (gl::FormatSet::const_iterator internalFormat = allFormats.begin(); internalFormat != allFormats.end(); ++internalFormat)
     {
         caps.textureCaps.insert(*internalFormat, GenerateTextureFormatCaps(*internalFormat, maxClientVersion, device));
     }

     D3D_FEATURE_LEVEL featureLevel = device->GetFeatureLevel();

     caps.extensions.setTextureExtensionSupport(caps.textureCaps);
     caps.extensions.elementIndexUint = true;
     caps.extensions.packedDepthStencil = true;
     caps.extensions.getProgramBinary = true;
     caps.extensions.rgb8rgba8 = true;
     caps.extensions.readFormatBGRA = true;
     caps.extensions.pixelBufferObject = true;
     caps.extensions.mapBuffer = true;
     caps.extensions.mapBufferRange = true;
     caps.extensions.textureNPOT = d3d11::GetNPOTTextureSupport(featureLevel);
     caps.extensions.drawBuffers = d3d11::GetMaximumSimultaneousRenderTargets(featureLevel) > 1;
     caps.extensions.textureStorage = true;
     caps.extensions.textureFilterAnisotropic = true;
     caps.extensions.maxTextureAnisotropy = d3d11::GetMaximumAnisotropy(featureLevel);
     caps.extensions.occlusionQueryBoolean = d3d11::GetOcclusionQuerySupport(featureLevel);
     caps.extensions.fence = d3d11::GetEventQuerySupport(featureLevel);
     caps.extensions.timerQuery = false; // Unimplemented
     caps.extensions.robustness = true;
     caps.extensions.blendMinMax = true;
     caps.extensions.framebufferBlit = true;
     caps.extensions.framebufferMultisample = true;
     caps.extensions.instancedArrays = d3d11::GetInstancingSupport(featureLevel);
     caps.extensions.packReverseRowOrder = true;
     caps.extensions.standardDerivatives = d3d11::GetDerivativeInstructionSupport(featureLevel);
     caps.extensions.shaderTextureLOD = true;
     caps.extensions.fragDepth = true;
     caps.extensions.textureUsage = true; // This could be false since it has no effect in D3D11
     caps.extensions.translatedShaderSource = true;

     return caps;
 }

 }

 namespace d3d11
 {

 void GenerateInitialTextureData(GLint internalFormat, GLuint clientVersion, GLuint width, GLuint height, GLuint depth,
                                 GLuint mipLevels, std::vector<D3D11_SUBRESOURCE_DATA> *outSubresourceData,
                                 std::vector< std::vector<BYTE> > *outData)
 {
     InitializeTextureDataFunction initializeFunc = gl_d3d11::GetTextureDataInitializationFunction(internalFormat);
     DXGI_FORMAT dxgiFormat = gl_d3d11::GetTexFormat(internalFormat, clientVersion);

     outSubresourceData->resize(mipLevels);
     outData->resize(mipLevels);

     for (unsigned int i = 0; i < mipLevels; i++)
     {
         unsigned int mipWidth = std::max(width >> i, 1U);
         unsigned int mipHeight = std::max(height >> i, 1U);
         unsigned int mipDepth = std::max(depth >> i, 1U);

         unsigned int rowWidth = d3d11::GetFormatPixelBytes(dxgiFormat) * mipWidth;
         unsigned int imageSize = rowWidth * height;

         outData->at(i).resize(rowWidth * mipHeight * mipDepth);
         initializeFunc(mipWidth, mipHeight, mipDepth, outData->at(i).data(), rowWidth, imageSize);

         outSubresourceData->at(i).pSysMem = outData->at(i).data();
         outSubresourceData->at(i).SysMemPitch = rowWidth;
         outSubresourceData->at(i).SysMemSlicePitch = imageSize;
     }
 }

 void SetPositionTexCoordVertex(PositionTexCoordVertex* vertex, float x, float y, float u, float v)
 {
     vertex->x = x;
     vertex->y = y;
     vertex->u = u;
     vertex->v = v;
 }

 void SetPositionLayerTexCoord3DVertex(PositionLayerTexCoord3DVertex* vertex, float x, float y,
                                       unsigned int layer, float u, float v, float s)
 {
     vertex->x = x;
     vertex->y = y;
     vertex->l = layer;
     vertex->u = u;
     vertex->v = v;
     vertex->s = s;
 }

 HRESULT SetDebugName(ID3D11DeviceChild *resource, const char *name)
 {
 #if defined(_DEBUG)
     return resource->SetPrivateData(WKPDID_D3DDebugObjectName, strlen(name), name);
 #else
     return S_OK;
 #endif
 }

 bool GetNPOTTextureSupport(D3D_FEATURE_LEVEL featureLevel)
 {
     switch (featureLevel)
     {
       case D3D_FEATURE_LEVEL_11_1:
       case D3D_FEATURE_LEVEL_11_0:
       case D3D_FEATURE_LEVEL_10_1:
       case D3D_FEATURE_LEVEL_10_0: return true;

       // From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476876.aspx
       case D3D_FEATURE_LEVEL_9_3:
       case D3D_FEATURE_LEVEL_9_2:
       case D3D_FEATURE_LEVEL_9_1:  return false;

       default: UNREACHABLE();      return false;
     }
 }

 float GetMaximumAnisotropy(D3D_FEATURE_LEVEL featureLevel)
 {
     switch (featureLevel)
     {
       case D3D_FEATURE_LEVEL_11_1:
       case D3D_FEATURE_LEVEL_11_0: return D3D11_MAX_MAXANISOTROPY;

       case D3D_FEATURE_LEVEL_10_1:
       case D3D_FEATURE_LEVEL_10_0: return D3D10_MAX_MAXANISOTROPY;

       // From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476876.aspx
       case D3D_FEATURE_LEVEL_9_3:
       case D3D_FEATURE_LEVEL_9_2:  return 16;

       case D3D_FEATURE_LEVEL_9_1:  return D3D_FL9_1_DEFAULT_MAX_ANISOTROPY;

       default: UNREACHABLE();      return 0;
     }
 }

 bool GetOcclusionQuerySupport(D3D_FEATURE_LEVEL featureLevel)
 {
     switch (featureLevel)
     {
       case D3D_FEATURE_LEVEL_11_1:
       case D3D_FEATURE_LEVEL_11_0:
       case D3D_FEATURE_LEVEL_10_1:
       case D3D_FEATURE_LEVEL_10_0: return true;

       // From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476150.aspx ID3D11Device::CreateQuery
       case D3D_FEATURE_LEVEL_9_3:
       case D3D_FEATURE_LEVEL_9_2:  return true;
       case D3D_FEATURE_LEVEL_9_1:  return false;

       default: UNREACHABLE();      return false;
     }
 }

 bool GetEventQuerySupport(D3D_FEATURE_LEVEL featureLevel)
 {
     // From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476150.aspx ID3D11Device::CreateQuery

     switch (featureLevel)
     {
       case D3D_FEATURE_LEVEL_11_1:
       case D3D_FEATURE_LEVEL_11_0:
       case D3D_FEATURE_LEVEL_10_1:
       case D3D_FEATURE_LEVEL_10_0:
       case D3D_FEATURE_LEVEL_9_3:
       case D3D_FEATURE_LEVEL_9_2:
       case D3D_FEATURE_LEVEL_9_1:  return true;

       default: UNREACHABLE();      return false;
     }
 }

 bool GetInstancingSupport(D3D_FEATURE_LEVEL featureLevel)
 {
     // From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476150.aspx ID3D11Device::CreateInputLayout

     switch (featureLevel)
     {
       case D3D_FEATURE_LEVEL_11_1:
       case D3D_FEATURE_LEVEL_11_0:
       case D3D_FEATURE_LEVEL_10_1:
       case D3D_FEATURE_LEVEL_10_0:
       case D3D_FEATURE_LEVEL_9_3:  return true;

       case D3D_FEATURE_LEVEL_9_2:
       case D3D_FEATURE_LEVEL_9_1:  return false;

       default: UNREACHABLE();      return false;
     }
 }

 bool GetDerivativeInstructionSupport(D3D_FEATURE_LEVEL featureLevel)
 {
     // http://msdn.microsoft.com/en-us/library/windows/desktop/bb509588.aspx states that shader model
     // ps_2_x is required for the ddx (and other derivative functions).

     // http://msdn.microsoft.com/en-us/library/windows/desktop/ff476876.aspx states that feature level
     // 9.3 supports shader model ps_2_x.

     switch (featureLevel)
     {
       case D3D_FEATURE_LEVEL_11_1:
       case D3D_FEATURE_LEVEL_11_0:
       case D3D_FEATURE_LEVEL_10_1:
       case D3D_FEATURE_LEVEL_10_0:
       case D3D_FEATURE_LEVEL_9_3:  return true;
       case D3D_FEATURE_LEVEL_9_2:
       case D3D_FEATURE_LEVEL_9_1:  return false;

       default: UNREACHABLE();      return false;
     }
 }

 size_t GetMaximumSimultaneousRenderTargets(D3D_FEATURE_LEVEL featureLevel)
 {
     // From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476150.aspx ID3D11Device::CreateInputLayout

     switch (featureLevel)
     {
       case D3D_FEATURE_LEVEL_11_1:
       case D3D_FEATURE_LEVEL_11_0: return D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT;

       // FIXME(geofflang): Work around NVIDIA driver bug by repacking buffers
       case D3D_FEATURE_LEVEL_10_1:
       case D3D_FEATURE_LEVEL_10_0: return 1; /* D3D10_SIMULTANEOUS_RENDER_TARGET_COUNT; */

       case D3D_FEATURE_LEVEL_9_3:  return D3D_FL9_3_SIMULTANEOUS_RENDER_TARGET_COUNT;
       case D3D_FEATURE_LEVEL_9_2:
       case D3D_FEATURE_LEVEL_9_1:  return D3D_FL9_1_SIMULTANEOUS_RENDER_TARGET_COUNT;

       default: UNREACHABLE();      return 0;
     }
 }

 }

 }
	#include "precompiled.h"
	//
	// Copyright (c) 2012-2014 The ANGLE Project Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.
	//

	// renderer11_utils.cpp: Conversion functions and other utility routines
	// specific to the D3D11 renderer.

	#include "libGLESv2/renderer/d3d11/renderer11_utils.h"
	#include "libGLESv2/renderer/d3d11/formatutils11.h"
	#include "common/debug.h"

	namespace rx
	{

	namespace gl_d3d11
	{

	D3D11_BLEND ConvertBlendFunc(GLenum glBlend, bool isAlpha)
	{
	D3D11_BLEND d3dBlend = D3D11_BLEND_ZERO;

	switch (glBlend)
	{
	case GL_ZERO: d3dBlend = D3D11_BLEND_ZERO; break;
	case GL_ONE: d3dBlend = D3D11_BLEND_ONE; break;
	case GL_SRC_COLOR: d3dBlend = (isAlpha ? D3D11_BLEND_SRC_ALPHA : D3D11_BLEND_SRC_COLOR); break;
	case GL_ONE_MINUS_SRC_COLOR: d3dBlend = (isAlpha ? D3D11_BLEND_INV_SRC_ALPHA : D3D11_BLEND_INV_SRC_COLOR); break;
	case GL_DST_COLOR: d3dBlend = (isAlpha ? D3D11_BLEND_DEST_ALPHA : D3D11_BLEND_DEST_COLOR); break;
	case GL_ONE_MINUS_DST_COLOR: d3dBlend = (isAlpha ? D3D11_BLEND_INV_DEST_ALPHA : D3D11_BLEND_INV_DEST_COLOR); break;
	case GL_SRC_ALPHA: d3dBlend = D3D11_BLEND_SRC_ALPHA; break;
	case GL_ONE_MINUS_SRC_ALPHA: d3dBlend = D3D11_BLEND_INV_SRC_ALPHA; break;
	case GL_DST_ALPHA: d3dBlend = D3D11_BLEND_DEST_ALPHA; break;
	case GL_ONE_MINUS_DST_ALPHA: d3dBlend = D3D11_BLEND_INV_DEST_ALPHA; break;
	case GL_CONSTANT_COLOR: d3dBlend = D3D11_BLEND_BLEND_FACTOR; break;
	case GL_ONE_MINUS_CONSTANT_COLOR: d3dBlend = D3D11_BLEND_INV_BLEND_FACTOR; break;
	case GL_CONSTANT_ALPHA: d3dBlend = D3D11_BLEND_BLEND_FACTOR; break;
	case GL_ONE_MINUS_CONSTANT_ALPHA: d3dBlend = D3D11_BLEND_INV_BLEND_FACTOR; break;
	case GL_SRC_ALPHA_SATURATE: d3dBlend = D3D11_BLEND_SRC_ALPHA_SAT; break;
	default: UNREACHABLE();
	}

	return d3dBlend;
	}

	D3D11_BLEND_OP ConvertBlendOp(GLenum glBlendOp)
	{
	D3D11_BLEND_OP d3dBlendOp = D3D11_BLEND_OP_ADD;

	switch (glBlendOp)
	{
	case GL_FUNC_ADD: d3dBlendOp = D3D11_BLEND_OP_ADD; break;
	case GL_FUNC_SUBTRACT: d3dBlendOp = D3D11_BLEND_OP_SUBTRACT; break;
	case GL_FUNC_REVERSE_SUBTRACT: d3dBlendOp = D3D11_BLEND_OP_REV_SUBTRACT; break;
	case GL_MIN: d3dBlendOp = D3D11_BLEND_OP_MIN; break;
	case GL_MAX: d3dBlendOp = D3D11_BLEND_OP_MAX; break;
	default: UNREACHABLE();
	}

	return d3dBlendOp;
	}

	UINT8 ConvertColorMask(bool red, bool green, bool blue, bool alpha)
	{
	UINT8 mask = 0;
	if (red)
	{
	mask \|= D3D11_COLOR_WRITE_ENABLE_RED;
	}
	if (green)
	{
	mask \|= D3D11_COLOR_WRITE_ENABLE_GREEN;
	}
	if (blue)
	{
	mask \|= D3D11_COLOR_WRITE_ENABLE_BLUE;
	}
	if (alpha)
	{
	mask \|= D3D11_COLOR_WRITE_ENABLE_ALPHA;
	}
	return mask;
	}

	D3D11_CULL_MODE ConvertCullMode(bool cullEnabled, GLenum cullMode)
	{
	D3D11_CULL_MODE cull = D3D11_CULL_NONE;

	if (cullEnabled)
	{
	switch (cullMode)
	{
	case GL_FRONT: cull = D3D11_CULL_FRONT; break;
	case GL_BACK: cull = D3D11_CULL_BACK; break;
	case GL_FRONT_AND_BACK: cull = D3D11_CULL_NONE; break;
	default: UNREACHABLE();
	}
	}
	else
	{
	cull = D3D11_CULL_NONE;
	}

	return cull;
	}

	D3D11_COMPARISON_FUNC ConvertComparison(GLenum comparison)
	{
	D3D11_COMPARISON_FUNC d3dComp = D3D11_COMPARISON_NEVER;
	switch (comparison)
	{
	case GL_NEVER: d3dComp = D3D11_COMPARISON_NEVER; break;
	case GL_ALWAYS: d3dComp = D3D11_COMPARISON_ALWAYS; break;
	case GL_LESS: d3dComp = D3D11_COMPARISON_LESS; break;
	case GL_LEQUAL: d3dComp = D3D11_COMPARISON_LESS_EQUAL; break;
	case GL_EQUAL: d3dComp = D3D11_COMPARISON_EQUAL; break;
	case GL_GREATER: d3dComp = D3D11_COMPARISON_GREATER; break;
	case GL_GEQUAL: d3dComp = D3D11_COMPARISON_GREATER_EQUAL; break;
	case GL_NOTEQUAL: d3dComp = D3D11_COMPARISON_NOT_EQUAL; break;
	default: UNREACHABLE();
	}

	return d3dComp;
	}

	D3D11_DEPTH_WRITE_MASK ConvertDepthMask(bool depthWriteEnabled)
	{
	return depthWriteEnabled ? D3D11_DEPTH_WRITE_MASK_ALL : D3D11_DEPTH_WRITE_MASK_ZERO;
	}

	UINT8 ConvertStencilMask(GLuint stencilmask)
	{
	return static_cast<UINT8>(stencilmask);
	}

	D3D11_STENCIL_OP ConvertStencilOp(GLenum stencilOp)
	{
	D3D11_STENCIL_OP d3dStencilOp = D3D11_STENCIL_OP_KEEP;

	switch (stencilOp)
	{
	case GL_ZERO: d3dStencilOp = D3D11_STENCIL_OP_ZERO; break;
	case GL_KEEP: d3dStencilOp = D3D11_STENCIL_OP_KEEP; break;
	case GL_REPLACE: d3dStencilOp = D3D11_STENCIL_OP_REPLACE; break;
	case GL_INCR: d3dStencilOp = D3D11_STENCIL_OP_INCR_SAT; break;
	case GL_DECR: d3dStencilOp = D3D11_STENCIL_OP_DECR_SAT; break;
	case GL_INVERT: d3dStencilOp = D3D11_STENCIL_OP_INVERT; break;
	case GL_INCR_WRAP: d3dStencilOp = D3D11_STENCIL_OP_INCR; break;
	case GL_DECR_WRAP: d3dStencilOp = D3D11_STENCIL_OP_DECR; break;
	default: UNREACHABLE();
	}

	return d3dStencilOp;
	}

	D3D11_FILTER ConvertFilter(GLenum minFilter, GLenum magFilter, float maxAnisotropy, GLenum comparisonMode)
	{
	bool comparison = comparisonMode != GL_NONE;

	if (maxAnisotropy > 1.0f)
	{
	return D3D11_ENCODE_ANISOTROPIC_FILTER(static_cast<D3D11_COMPARISON_FUNC>(comparison));
	}
	else
	{
	D3D11_FILTER_TYPE dxMin = D3D11_FILTER_TYPE_POINT;
	D3D11_FILTER_TYPE dxMip = D3D11_FILTER_TYPE_POINT;
	switch (minFilter)
	{
	case GL_NEAREST: dxMin = D3D11_FILTER_TYPE_POINT; dxMip = D3D11_FILTER_TYPE_POINT; break;
	case GL_LINEAR: dxMin = D3D11_FILTER_TYPE_LINEAR; dxMip = D3D11_FILTER_TYPE_POINT; break;
	case GL_NEAREST_MIPMAP_NEAREST: dxMin = D3D11_FILTER_TYPE_POINT; dxMip = D3D11_FILTER_TYPE_POINT; break;
	case GL_LINEAR_MIPMAP_NEAREST: dxMin = D3D11_FILTER_TYPE_LINEAR; dxMip = D3D11_FILTER_TYPE_POINT; break;
	case GL_NEAREST_MIPMAP_LINEAR: dxMin = D3D11_FILTER_TYPE_POINT; dxMip = D3D11_FILTER_TYPE_LINEAR; break;
	case GL_LINEAR_MIPMAP_LINEAR: dxMin = D3D11_FILTER_TYPE_LINEAR; dxMip = D3D11_FILTER_TYPE_LINEAR; break;
	default: UNREACHABLE();
	}

	D3D11_FILTER_TYPE dxMag = D3D11_FILTER_TYPE_POINT;
	switch (magFilter)
	{
	case GL_NEAREST: dxMag = D3D11_FILTER_TYPE_POINT; break;
	case GL_LINEAR: dxMag = D3D11_FILTER_TYPE_LINEAR; break;
	default: UNREACHABLE();
	}

	return D3D11_ENCODE_BASIC_FILTER(dxMin, dxMag, dxMip, static_cast<D3D11_COMPARISON_FUNC>(comparison));
	}
	}

	D3D11_TEXTURE_ADDRESS_MODE ConvertTextureWrap(GLenum wrap)
	{
	switch (wrap)
	{
	case GL_REPEAT: return D3D11_TEXTURE_ADDRESS_WRAP;
	case GL_CLAMP_TO_EDGE: return D3D11_TEXTURE_ADDRESS_CLAMP;
	case GL_MIRRORED_REPEAT: return D3D11_TEXTURE_ADDRESS_MIRROR;
	default: UNREACHABLE();
	}

	return D3D11_TEXTURE_ADDRESS_WRAP;
	}

	D3D11_QUERY ConvertQueryType(GLenum queryType)
	{
	switch (queryType)
	{
	case GL_ANY_SAMPLES_PASSED_EXT:
	case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT: return D3D11_QUERY_OCCLUSION;
	case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: return D3D11_QUERY_SO_STATISTICS;
	default: UNREACHABLE(); return D3D11_QUERY_EVENT;
	}
	}

	}


	namespace d3d11_gl
	{

	static gl::TextureCaps GenerateTextureFormatCaps(GLenum internalFormat, GLuint clientVersion, ID3D11Device *device)
	{
	gl::TextureCaps textureCaps;

	DXGI_FORMAT textureFormat = gl_d3d11::GetTexFormat(internalFormat, clientVersion);
	DXGI_FORMAT srvFormat = gl_d3d11::GetSRVFormat(internalFormat, clientVersion);
	DXGI_FORMAT rtvFormat = gl_d3d11::GetRTVFormat(internalFormat, clientVersion);
	DXGI_FORMAT dsvFormat = gl_d3d11::GetDSVFormat(internalFormat, clientVersion);
	DXGI_FORMAT renderFormat = gl_d3d11::GetRenderableFormat(internalFormat, clientVersion);

	UINT formatSupport;
	if (SUCCEEDED(device->CheckFormatSupport(textureFormat, &formatSupport)))
	{
	textureCaps.texture2D = (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURE2D) != 0;
	textureCaps.textureCubeMap = (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURECUBE) != 0;
	textureCaps.texture3D = (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURE3D) != 0;
	textureCaps.texture2DArray = (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURE2D) != 0;
	}

	if (SUCCEEDED(device->CheckFormatSupport(renderFormat, &formatSupport)) &&
	(formatSupport & D3D11_FORMAT_SUPPORT_MULTISAMPLE_RENDERTARGET))
	{
	for (size_t sampleCount = 1; sampleCount <= D3D11_MAX_MULTISAMPLE_SAMPLE_COUNT; sampleCount++)
	{
	UINT qualityCount = 0;
	if (SUCCEEDED(device->CheckMultisampleQualityLevels(renderFormat, sampleCount, &qualityCount)) &&
	qualityCount > 0)
	{
	textureCaps.sampleCounts.insert(sampleCount);
	}
	}
	}

	if (SUCCEEDED(device->CheckFormatSupport(srvFormat, &formatSupport)))
	{
	textureCaps.filtering = (formatSupport & D3D11_FORMAT_SUPPORT_SHADER_SAMPLE) != 0;
	}

	if (SUCCEEDED(device->CheckFormatSupport(rtvFormat, &formatSupport)))
	{
	textureCaps.colorRendering = (formatSupport & D3D11_FORMAT_SUPPORT_RENDER_TARGET) != 0;
	}

	if (SUCCEEDED(device->CheckFormatSupport(dsvFormat, &formatSupport)))
	{
	textureCaps.depthRendering = gl::GetDepthBits(internalFormat, clientVersion) > 0 &&
	(formatSupport & D3D11_FORMAT_SUPPORT_DEPTH_STENCIL) != 0;
	textureCaps.stencilRendering = gl::GetStencilBits(internalFormat, clientVersion) > 0 &&
	(formatSupport & D3D11_FORMAT_SUPPORT_DEPTH_STENCIL) != 0;
	}

	return textureCaps;
	}

	gl::Caps GenerateCaps(ID3D11Device *device)
	{
	gl::Caps caps;

	const GLuint maxClientVersion = 3;
	const gl::FormatSet &allFormats = gl::GetAllSizedInternalFormats(maxClientVersion);
	for (gl::FormatSet::const_iterator internalFormat = allFormats.begin(); internalFormat != allFormats.end(); ++internalFormat)
	{
	caps.textureCaps.insert(internalFormat, GenerateTextureFormatCaps(internalFormat, maxClientVersion, device));
	}

	D3D_FEATURE_LEVEL featureLevel = device->GetFeatureLevel();

	caps.extensions.setTextureExtensionSupport(caps.textureCaps);
	caps.extensions.elementIndexUint = true;
	caps.extensions.packedDepthStencil = true;
	caps.extensions.getProgramBinary = true;
	caps.extensions.rgb8rgba8 = true;
	caps.extensions.readFormatBGRA = true;
	caps.extensions.pixelBufferObject = true;
	caps.extensions.mapBuffer = true;
	caps.extensions.mapBufferRange = true;
	caps.extensions.textureNPOT = d3d11::GetNPOTTextureSupport(featureLevel);
	caps.extensions.drawBuffers = d3d11::GetMaximumSimultaneousRenderTargets(featureLevel) > 1;
	caps.extensions.textureStorage = true;
	caps.extensions.textureFilterAnisotropic = true;
	caps.extensions.maxTextureAnisotropy = d3d11::GetMaximumAnisotropy(featureLevel);
	caps.extensions.occlusionQueryBoolean = d3d11::GetOcclusionQuerySupport(featureLevel);
	caps.extensions.fence = d3d11::GetEventQuerySupport(featureLevel);
	caps.extensions.timerQuery = false; // Unimplemented
	caps.extensions.robustness = true;
	caps.extensions.blendMinMax = true;
	caps.extensions.framebufferBlit = true;
	caps.extensions.framebufferMultisample = true;
	caps.extensions.instancedArrays = d3d11::GetInstancingSupport(featureLevel);
	caps.extensions.packReverseRowOrder = true;
	caps.extensions.standardDerivatives = d3d11::GetDerivativeInstructionSupport(featureLevel);
	caps.extensions.shaderTextureLOD = true;
	caps.extensions.fragDepth = true;
	caps.extensions.textureUsage = true; // This could be false since it has no effect in D3D11
	caps.extensions.translatedShaderSource = true;

	return caps;
	}

	}

	namespace d3d11
	{

	void GenerateInitialTextureData(GLint internalFormat, GLuint clientVersion, GLuint width, GLuint height, GLuint depth,
	GLuint mipLevels, std::vector<D3D11_SUBRESOURCE_DATA> *outSubresourceData,
	std::vector< std::vector<BYTE> > *outData)
	{
	InitializeTextureDataFunction initializeFunc = gl_d3d11::GetTextureDataInitializationFunction(internalFormat);
	DXGI_FORMAT dxgiFormat = gl_d3d11::GetTexFormat(internalFormat, clientVersion);

	outSubresourceData->resize(mipLevels);
	outData->resize(mipLevels);

	for (unsigned int i = 0; i < mipLevels; i++)
	{
	unsigned int mipWidth = std::max(width >> i, 1U);
	unsigned int mipHeight = std::max(height >> i, 1U);
	unsigned int mipDepth = std::max(depth >> i, 1U);

	unsigned int rowWidth = d3d11::GetFormatPixelBytes(dxgiFormat) * mipWidth;
	unsigned int imageSize = rowWidth * height;

	outData->at(i).resize(rowWidth * mipHeight * mipDepth);
	initializeFunc(mipWidth, mipHeight, mipDepth, outData->at(i).data(), rowWidth, imageSize);

	outSubresourceData->at(i).pSysMem = outData->at(i).data();
	outSubresourceData->at(i).SysMemPitch = rowWidth;
	outSubresourceData->at(i).SysMemSlicePitch = imageSize;
	}
	}

	void SetPositionTexCoordVertex(PositionTexCoordVertex* vertex, float x, float y, float u, float v)
	{
	vertex->x = x;
	vertex->y = y;
	vertex->u = u;
	vertex->v = v;
	}

	void SetPositionLayerTexCoord3DVertex(PositionLayerTexCoord3DVertex* vertex, float x, float y,
	unsigned int layer, float u, float v, float s)
	{
	vertex->x = x;
	vertex->y = y;
	vertex->l = layer;
	vertex->u = u;
	vertex->v = v;
	vertex->s = s;
	}

	HRESULT SetDebugName(ID3D11DeviceChild resource, const char name)
	{
	#if defined(_DEBUG)
	return resource->SetPrivateData(WKPDID_D3DDebugObjectName, strlen(name), name);
	#else
	return S_OK;
	#endif
	}

	bool GetNPOTTextureSupport(D3D_FEATURE_LEVEL featureLevel)
	{
	switch (featureLevel)
	{
	case D3D_FEATURE_LEVEL_11_1:
	case D3D_FEATURE_LEVEL_11_0:
	case D3D_FEATURE_LEVEL_10_1:
	case D3D_FEATURE_LEVEL_10_0: return true;

	// From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476876.aspx
	case D3D_FEATURE_LEVEL_9_3:
	case D3D_FEATURE_LEVEL_9_2:
	case D3D_FEATURE_LEVEL_9_1: return false;

	default: UNREACHABLE(); return false;
	}
	}

	float GetMaximumAnisotropy(D3D_FEATURE_LEVEL featureLevel)
	{
	switch (featureLevel)
	{
	case D3D_FEATURE_LEVEL_11_1:
	case D3D_FEATURE_LEVEL_11_0: return D3D11_MAX_MAXANISOTROPY;

	case D3D_FEATURE_LEVEL_10_1:
	case D3D_FEATURE_LEVEL_10_0: return D3D10_MAX_MAXANISOTROPY;

	// From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476876.aspx
	case D3D_FEATURE_LEVEL_9_3:
	case D3D_FEATURE_LEVEL_9_2: return 16;

	case D3D_FEATURE_LEVEL_9_1: return D3D_FL9_1_DEFAULT_MAX_ANISOTROPY;

	default: UNREACHABLE(); return 0;
	}
	}

	bool GetOcclusionQuerySupport(D3D_FEATURE_LEVEL featureLevel)
	{
	switch (featureLevel)
	{
	case D3D_FEATURE_LEVEL_11_1:
	case D3D_FEATURE_LEVEL_11_0:
	case D3D_FEATURE_LEVEL_10_1:
	case D3D_FEATURE_LEVEL_10_0: return true;

	// From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476150.aspx ID3D11Device::CreateQuery
	case D3D_FEATURE_LEVEL_9_3:
	case D3D_FEATURE_LEVEL_9_2: return true;
	case D3D_FEATURE_LEVEL_9_1: return false;

	default: UNREACHABLE(); return false;
	}
	}

	bool GetEventQuerySupport(D3D_FEATURE_LEVEL featureLevel)
	{
	// From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476150.aspx ID3D11Device::CreateQuery

	switch (featureLevel)
	{
	case D3D_FEATURE_LEVEL_11_1:
	case D3D_FEATURE_LEVEL_11_0:
	case D3D_FEATURE_LEVEL_10_1:
	case D3D_FEATURE_LEVEL_10_0:
	case D3D_FEATURE_LEVEL_9_3:
	case D3D_FEATURE_LEVEL_9_2:
	case D3D_FEATURE_LEVEL_9_1: return true;

	default: UNREACHABLE(); return false;
	}
	}

	bool GetInstancingSupport(D3D_FEATURE_LEVEL featureLevel)
	{
	// From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476150.aspx ID3D11Device::CreateInputLayout

	switch (featureLevel)
	{
	case D3D_FEATURE_LEVEL_11_1:
	case D3D_FEATURE_LEVEL_11_0:
	case D3D_FEATURE_LEVEL_10_1:
	case D3D_FEATURE_LEVEL_10_0:
	case D3D_FEATURE_LEVEL_9_3: return true;

	case D3D_FEATURE_LEVEL_9_2:
	case D3D_FEATURE_LEVEL_9_1: return false;

	default: UNREACHABLE(); return false;
	}
	}

	bool GetDerivativeInstructionSupport(D3D_FEATURE_LEVEL featureLevel)
	{
	// http://msdn.microsoft.com/en-us/library/windows/desktop/bb509588.aspx states that shader model
	// ps_2_x is required for the ddx (and other derivative functions).

	// http://msdn.microsoft.com/en-us/library/windows/desktop/ff476876.aspx states that feature level
	// 9.3 supports shader model ps_2_x.

	switch (featureLevel)
	{
	case D3D_FEATURE_LEVEL_11_1:
	case D3D_FEATURE_LEVEL_11_0:
	case D3D_FEATURE_LEVEL_10_1:
	case D3D_FEATURE_LEVEL_10_0:
	case D3D_FEATURE_LEVEL_9_3: return true;
	case D3D_FEATURE_LEVEL_9_2:
	case D3D_FEATURE_LEVEL_9_1: return false;

	default: UNREACHABLE(); return false;
	}
	}

	size_t GetMaximumSimultaneousRenderTargets(D3D_FEATURE_LEVEL featureLevel)
	{
	// From http://msdn.microsoft.com/en-us/library/windows/desktop/ff476150.aspx ID3D11Device::CreateInputLayout

	switch (featureLevel)
	{
	case D3D_FEATURE_LEVEL_11_1:
	case D3D_FEATURE_LEVEL_11_0: return D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT;

	// FIXME(geofflang): Work around NVIDIA driver bug by repacking buffers
	case D3D_FEATURE_LEVEL_10_1:
	case D3D_FEATURE_LEVEL_10_0: return 1; /* D3D10_SIMULTANEOUS_RENDER_TARGET_COUNT; */

	case D3D_FEATURE_LEVEL_9_3: return D3D_FL9_3_SIMULTANEOUS_RENDER_TARGET_COUNT;
	case D3D_FEATURE_LEVEL_9_2:
	case D3D_FEATURE_LEVEL_9_1: return D3D_FL9_1_SIMULTANEOUS_RENDER_TARGET_COUNT;

	default: UNREACHABLE(); return 0;
	}
	}

	}

	}