| /* |
| * Copyright (C) 2009-2010 Francisco Jerez. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial |
| * portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| */ |
| |
| #include "nouveau_driver.h" |
| #include "nouveau_context.h" |
| #include "nouveau_gldefs.h" |
| #include "nouveau_util.h" |
| #include "nv10_3d.xml.h" |
| #include "nv10_driver.h" |
| |
| void |
| nv10_emit_clip_plane(struct gl_context *ctx, int emit) |
| { |
| } |
| |
| static inline unsigned |
| get_material_bitmask(unsigned m) |
| { |
| unsigned ret = 0; |
| |
| if (m & MAT_BIT_FRONT_EMISSION) |
| ret |= NV10_3D_COLOR_MATERIAL_EMISSION; |
| if (m & MAT_BIT_FRONT_AMBIENT) |
| ret |= NV10_3D_COLOR_MATERIAL_AMBIENT; |
| if (m & MAT_BIT_FRONT_DIFFUSE) |
| ret |= NV10_3D_COLOR_MATERIAL_DIFFUSE; |
| if (m & MAT_BIT_FRONT_SPECULAR) |
| ret |= NV10_3D_COLOR_MATERIAL_SPECULAR; |
| |
| return ret; |
| } |
| |
| void |
| nv10_emit_color_material(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_pushbuf *push = context_push(ctx); |
| unsigned mask = get_material_bitmask(ctx->Light._ColorMaterialBitmask); |
| |
| BEGIN_NV04(push, NV10_3D(COLOR_MATERIAL), 1); |
| PUSH_DATA (push, ctx->Light.ColorMaterialEnabled ? mask : 0); |
| } |
| |
| static unsigned |
| get_fog_mode(unsigned mode) |
| { |
| switch (mode) { |
| case GL_LINEAR: |
| return NV10_3D_FOG_MODE_LINEAR; |
| case GL_EXP: |
| return NV10_3D_FOG_MODE_EXP; |
| case GL_EXP2: |
| return NV10_3D_FOG_MODE_EXP2; |
| default: |
| assert(0); |
| } |
| } |
| |
| static unsigned |
| get_fog_source(unsigned source, unsigned distance_mode) |
| { |
| switch (source) { |
| case GL_FOG_COORDINATE_EXT: |
| return NV10_3D_FOG_COORD_FOG; |
| case GL_FRAGMENT_DEPTH_EXT: |
| switch (distance_mode) { |
| case GL_EYE_PLANE_ABSOLUTE_NV: |
| return NV10_3D_FOG_COORD_DIST_ORTHOGONAL_ABS; |
| case GL_EYE_PLANE: |
| return NV10_3D_FOG_COORD_DIST_ORTHOGONAL; |
| case GL_EYE_RADIAL_NV: |
| return NV10_3D_FOG_COORD_DIST_RADIAL; |
| default: |
| assert(0); |
| } |
| default: |
| assert(0); |
| } |
| } |
| |
| void |
| nv10_get_fog_coeff(struct gl_context *ctx, float k[3]) |
| { |
| struct gl_fog_attrib *f = &ctx->Fog; |
| |
| switch (f->Mode) { |
| case GL_LINEAR: |
| k[0] = 2 + f->Start / (f->End - f->Start); |
| k[1] = -1 / (f->End - f->Start); |
| break; |
| |
| case GL_EXP: |
| k[0] = 1.5; |
| k[1] = -0.09 * f->Density; |
| break; |
| |
| case GL_EXP2: |
| k[0] = 1.5; |
| k[1] = -0.21 * f->Density; |
| break; |
| |
| default: |
| assert(0); |
| } |
| |
| k[2] = 0; |
| } |
| |
| void |
| nv10_emit_fog(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_context *nctx = to_nouveau_context(ctx); |
| struct nouveau_pushbuf *push = context_push(ctx); |
| struct gl_fog_attrib *f = &ctx->Fog; |
| unsigned source = nctx->fallback == HWTNL ? |
| f->FogCoordinateSource : GL_FOG_COORDINATE_EXT; |
| float k[3]; |
| |
| nv10_get_fog_coeff(ctx, k); |
| |
| BEGIN_NV04(push, NV10_3D(FOG_MODE), 4); |
| PUSH_DATA (push, get_fog_mode(f->Mode)); |
| PUSH_DATA (push, get_fog_source(source, f->FogDistanceMode)); |
| PUSH_DATAb(push, f->Enabled); |
| PUSH_DATA (push, pack_rgba_f(MESA_FORMAT_RGBA8888_REV, f->Color)); |
| |
| BEGIN_NV04(push, NV10_3D(FOG_COEFF(0)), 3); |
| PUSH_DATAp(push, k, 3); |
| |
| context_dirty(ctx, FRAG); |
| } |
| |
| static inline unsigned |
| get_light_mode(struct gl_light *l) |
| { |
| if (l->Enabled) { |
| if (l->_Flags & LIGHT_SPOT) |
| return NV10_3D_ENABLED_LIGHTS_0_DIRECTIONAL; |
| else if (l->_Flags & LIGHT_POSITIONAL) |
| return NV10_3D_ENABLED_LIGHTS_0_POSITIONAL; |
| else |
| return NV10_3D_ENABLED_LIGHTS_0_NONPOSITIONAL; |
| } else { |
| return NV10_3D_ENABLED_LIGHTS_0_DISABLED; |
| } |
| } |
| |
| void |
| nv10_emit_light_enable(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_context *nctx = to_nouveau_context(ctx); |
| struct nouveau_pushbuf *push = context_push(ctx); |
| uint32_t en_lights = 0; |
| int i; |
| |
| if (nctx->fallback != HWTNL) { |
| BEGIN_NV04(push, NV10_3D(LIGHTING_ENABLE), 1); |
| PUSH_DATA (push, 0); |
| return; |
| } |
| |
| for (i = 0; i < MAX_LIGHTS; i++) |
| en_lights |= get_light_mode(&ctx->Light.Light[i]) << 2 * i; |
| |
| BEGIN_NV04(push, NV10_3D(ENABLED_LIGHTS), 1); |
| PUSH_DATA (push, en_lights); |
| BEGIN_NV04(push, NV10_3D(LIGHTING_ENABLE), 1); |
| PUSH_DATAb(push, ctx->Light.Enabled); |
| BEGIN_NV04(push, NV10_3D(NORMALIZE_ENABLE), 1); |
| PUSH_DATAb(push, ctx->Transform.Normalize); |
| } |
| |
| void |
| nv10_emit_light_model(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_pushbuf *push = context_push(ctx); |
| struct gl_lightmodel *m = &ctx->Light.Model; |
| |
| BEGIN_NV04(push, NV10_3D(SEPARATE_SPECULAR_ENABLE), 1); |
| PUSH_DATAb(push, m->ColorControl == GL_SEPARATE_SPECULAR_COLOR); |
| |
| BEGIN_NV04(push, NV10_3D(LIGHT_MODEL), 1); |
| PUSH_DATA (push, ((m->LocalViewer ? |
| NV10_3D_LIGHT_MODEL_LOCAL_VIEWER : 0) | |
| (_mesa_need_secondary_color(ctx) ? |
| NV10_3D_LIGHT_MODEL_SEPARATE_SPECULAR : 0) | |
| (!ctx->Light.Enabled && ctx->Fog.ColorSumEnabled ? |
| NV10_3D_LIGHT_MODEL_VERTEX_SPECULAR : 0))); |
| } |
| |
| static float |
| get_shine(const float p[], float x) |
| { |
| const int n = 15; |
| const float *y = &p[1]; |
| float f = (n - 1) * (1 - 1 / (1 + p[0] * x)) |
| / (1 - 1 / (1 + p[0] * 1024)); |
| int i = f; |
| |
| /* Linear interpolation in f-space (Faster and somewhat more |
| * accurate than x-space). */ |
| if (x == 0) |
| return y[0]; |
| else if (i > n - 2) |
| return y[n - 1]; |
| else |
| return y[i] + (y[i + 1] - y[i]) * (f - i); |
| } |
| |
| static const float nv10_spot_params[2][16] = { |
| { 0.02, -3.80e-05, -1.77, -2.41, -2.71, -2.88, -2.98, -3.06, |
| -3.11, -3.17, -3.23, -3.28, -3.37, -3.47, -3.83, -5.11 }, |
| { 0.02, -0.01, 1.77, 2.39, 2.70, 2.87, 2.98, 3.06, |
| 3.10, 3.16, 3.23, 3.27, 3.37, 3.47, 3.83, 5.11 }, |
| }; |
| |
| void |
| nv10_get_spot_coeff(struct gl_light *l, float k[7]) |
| { |
| float e = l->SpotExponent; |
| float a0, b0, a1, a2, b2, a3; |
| |
| if (e > 0) |
| a0 = -1 - 5.36e-3 / sqrt(e); |
| else |
| a0 = -1; |
| b0 = 1 / (1 + 0.273 * e); |
| |
| a1 = get_shine(nv10_spot_params[0], e); |
| |
| a2 = get_shine(nv10_spot_params[1], e); |
| b2 = 1 / (1 + 0.273 * e); |
| |
| a3 = 0.9 + 0.278 * e; |
| |
| if (l->SpotCutoff > 0) { |
| float cutoff = MAX2(a3, 1 / (1 - l->_CosCutoff)); |
| |
| k[0] = MAX2(0, a0 + b0 * cutoff); |
| k[1] = a1; |
| k[2] = a2 + b2 * cutoff; |
| k[3] = - cutoff * l->_NormSpotDirection[0]; |
| k[4] = - cutoff * l->_NormSpotDirection[1]; |
| k[5] = - cutoff * l->_NormSpotDirection[2]; |
| k[6] = 1 - cutoff; |
| |
| } else { |
| k[0] = b0; |
| k[1] = a1; |
| k[2] = a2 + b2; |
| k[3] = - l->_NormSpotDirection[0]; |
| k[4] = - l->_NormSpotDirection[1]; |
| k[5] = - l->_NormSpotDirection[2]; |
| k[6] = -1; |
| } |
| } |
| |
| void |
| nv10_emit_light_source(struct gl_context *ctx, int emit) |
| { |
| const int i = emit - NOUVEAU_STATE_LIGHT_SOURCE0; |
| struct nouveau_pushbuf *push = context_push(ctx); |
| struct gl_light *l = &ctx->Light.Light[i]; |
| |
| if (l->_Flags & LIGHT_POSITIONAL) { |
| BEGIN_NV04(push, NV10_3D(LIGHT_POSITION_X(i)), 3); |
| PUSH_DATAp(push, l->_Position, 3); |
| |
| BEGIN_NV04(push, NV10_3D(LIGHT_ATTENUATION_CONSTANT(i)), 3); |
| PUSH_DATAf(push, l->ConstantAttenuation); |
| PUSH_DATAf(push, l->LinearAttenuation); |
| PUSH_DATAf(push, l->QuadraticAttenuation); |
| |
| } else { |
| BEGIN_NV04(push, NV10_3D(LIGHT_DIRECTION_X(i)), 3); |
| PUSH_DATAp(push, l->_VP_inf_norm, 3); |
| |
| BEGIN_NV04(push, NV10_3D(LIGHT_HALF_VECTOR_X(i)), 3); |
| PUSH_DATAp(push, l->_h_inf_norm, 3); |
| } |
| |
| if (l->_Flags & LIGHT_SPOT) { |
| float k[7]; |
| |
| nv10_get_spot_coeff(l, k); |
| |
| BEGIN_NV04(push, NV10_3D(LIGHT_SPOT_CUTOFF(i, 0)), 7); |
| PUSH_DATAp(push, k, 7); |
| } |
| } |
| |
| #define USE_COLOR_MATERIAL(attr) \ |
| (ctx->Light.ColorMaterialEnabled && \ |
| ctx->Light._ColorMaterialBitmask & (1 << MAT_ATTRIB_FRONT_##attr)) |
| |
| void |
| nv10_emit_material_ambient(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_pushbuf *push = context_push(ctx); |
| float (*mat)[4] = ctx->Light.Material.Attrib; |
| float c_scene[3], c_factor[3]; |
| struct gl_light *l; |
| |
| if (USE_COLOR_MATERIAL(AMBIENT)) { |
| COPY_3V(c_scene, ctx->Light.Model.Ambient); |
| COPY_3V(c_factor, mat[MAT_ATTRIB_FRONT_EMISSION]); |
| |
| } else if (USE_COLOR_MATERIAL(EMISSION)) { |
| SCALE_3V(c_scene, mat[MAT_ATTRIB_FRONT_AMBIENT], |
| ctx->Light.Model.Ambient); |
| ZERO_3V(c_factor); |
| |
| } else { |
| COPY_3V(c_scene, ctx->Light._BaseColor[0]); |
| ZERO_3V(c_factor); |
| } |
| |
| BEGIN_NV04(push, NV10_3D(LIGHT_MODEL_AMBIENT_R), 3); |
| PUSH_DATAp(push, c_scene, 3); |
| |
| if (ctx->Light.ColorMaterialEnabled) { |
| BEGIN_NV04(push, NV10_3D(MATERIAL_FACTOR_R), 3); |
| PUSH_DATAp(push, c_factor, 3); |
| } |
| |
| foreach(l, &ctx->Light.EnabledList) { |
| const int i = l - ctx->Light.Light; |
| float *c_light = (USE_COLOR_MATERIAL(AMBIENT) ? |
| l->Ambient : |
| l->_MatAmbient[0]); |
| |
| BEGIN_NV04(push, NV10_3D(LIGHT_AMBIENT_R(i)), 3); |
| PUSH_DATAp(push, c_light, 3); |
| } |
| } |
| |
| void |
| nv10_emit_material_diffuse(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_pushbuf *push = context_push(ctx); |
| GLfloat (*mat)[4] = ctx->Light.Material.Attrib; |
| struct gl_light *l; |
| |
| BEGIN_NV04(push, NV10_3D(MATERIAL_FACTOR_A), 1); |
| PUSH_DATAf(push, mat[MAT_ATTRIB_FRONT_DIFFUSE][3]); |
| |
| foreach(l, &ctx->Light.EnabledList) { |
| const int i = l - ctx->Light.Light; |
| float *c_light = (USE_COLOR_MATERIAL(DIFFUSE) ? |
| l->Diffuse : |
| l->_MatDiffuse[0]); |
| |
| BEGIN_NV04(push, NV10_3D(LIGHT_DIFFUSE_R(i)), 3); |
| PUSH_DATAp(push, c_light, 3); |
| } |
| } |
| |
| void |
| nv10_emit_material_specular(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_pushbuf *push = context_push(ctx); |
| struct gl_light *l; |
| |
| foreach(l, &ctx->Light.EnabledList) { |
| const int i = l - ctx->Light.Light; |
| float *c_light = (USE_COLOR_MATERIAL(SPECULAR) ? |
| l->Specular : |
| l->_MatSpecular[0]); |
| |
| BEGIN_NV04(push, NV10_3D(LIGHT_SPECULAR_R(i)), 3); |
| PUSH_DATAp(push, c_light, 3); |
| } |
| } |
| |
| static const float nv10_shininess_param[6][16] = { |
| { 0.70, 0.00, 0.06, 0.06, 0.05, 0.04, 0.02, 0.00, |
| -0.06, -0.13, -0.24, -0.36, -0.51, -0.66, -0.82, -1.00 }, |
| { 0.01, 1.00, -2.29, -2.77, -2.96, -3.06, -3.12, -3.18, |
| -3.24, -3.29, -3.36, -3.43, -3.51, -3.75, -4.33, -5.11 }, |
| { 0.02, 0.00, 2.28, 2.75, 2.94, 3.04, 3.1, 3.15, |
| 3.18, 3.22, 3.27, 3.32, 3.39, 3.48, 3.84, 5.11 }, |
| { 0.70, 0.00, 0.05, 0.06, 0.06, 0.06, 0.05, 0.04, |
| 0.02, 0.01, -0.03, -0.12, -0.25, -0.43, -0.68, -0.99 }, |
| { 0.01, 1.00, -1.61, -2.35, -2.67, -2.84, -2.96, -3.05, |
| -3.08, -3.14, -3.2, -3.26, -3.32, -3.42, -3.54, -4.21 }, |
| { 0.01, 0.00, 2.25, 2.73, 2.92, 3.03, 3.09, 3.15, |
| 3.16, 3.21, 3.25, 3.29, 3.35, 3.43, 3.56, 4.22 }, |
| }; |
| |
| void |
| nv10_get_shininess_coeff(float s, float k[6]) |
| { |
| int i; |
| |
| for (i = 0; i < 6; i++) |
| k[i] = get_shine(nv10_shininess_param[i], s); |
| } |
| |
| void |
| nv10_emit_material_shininess(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_pushbuf *push = context_push(ctx); |
| float (*mat)[4] = ctx->Light.Material.Attrib; |
| float k[6]; |
| |
| nv10_get_shininess_coeff( |
| CLAMP(mat[MAT_ATTRIB_FRONT_SHININESS][0], 0, 1024), |
| k); |
| |
| BEGIN_NV04(push, NV10_3D(MATERIAL_SHININESS(0)), 6); |
| PUSH_DATAp(push, k, 6); |
| } |
| |
| void |
| nv10_emit_modelview(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_context *nctx = to_nouveau_context(ctx); |
| struct nouveau_pushbuf *push = context_push(ctx); |
| GLmatrix *m = ctx->ModelviewMatrixStack.Top; |
| |
| if (nctx->fallback != HWTNL) |
| return; |
| |
| if (ctx->Light._NeedEyeCoords || ctx->Fog.Enabled || |
| (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) { |
| BEGIN_NV04(push, NV10_3D(MODELVIEW_MATRIX(0, 0)), 16); |
| PUSH_DATAm(push, m->m); |
| } |
| |
| if (ctx->Light.Enabled || |
| (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)) { |
| int i, j; |
| |
| BEGIN_NV04(push, NV10_3D(INVERSE_MODELVIEW_MATRIX(0, 0)), 12); |
| for (i = 0; i < 3; i++) |
| for (j = 0; j < 4; j++) |
| PUSH_DATAf(push, m->inv[4*i + j]); |
| } |
| } |
| |
| void |
| nv10_emit_point_parameter(struct gl_context *ctx, int emit) |
| { |
| } |
| |
| void |
| nv10_emit_projection(struct gl_context *ctx, int emit) |
| { |
| struct nouveau_context *nctx = to_nouveau_context(ctx); |
| struct nouveau_pushbuf *push = context_push(ctx); |
| GLmatrix m; |
| |
| _math_matrix_ctr(&m); |
| get_viewport_scale(ctx, m.m); |
| |
| if (nv10_use_viewport_zclear(ctx)) |
| m.m[MAT_SZ] /= 8; |
| |
| if (nctx->fallback == HWTNL) |
| _math_matrix_mul_matrix(&m, &m, &ctx->_ModelProjectMatrix); |
| |
| BEGIN_NV04(push, NV10_3D(PROJECTION_MATRIX(0)), 16); |
| PUSH_DATAm(push, m.m); |
| |
| _math_matrix_dtr(&m); |
| } |