| /* |
| * Mesa 3-D graphics library |
| * Version: 6.5.3 |
| * |
| * Copyright (C) 1999-2006 Brian Paul 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 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 |
| * BRIAN PAUL 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. |
| */ |
| |
| /** |
| * \file prog_statevars.c |
| * Program state variable management. |
| * \author Brian Paul |
| */ |
| |
| |
| #include "glheader.h" |
| #include "context.h" |
| #include "hash.h" |
| #include "imports.h" |
| #include "macros.h" |
| #include "mtypes.h" |
| #include "prog_statevars.h" |
| #include "prog_parameter.h" |
| #include "nvvertparse.h" |
| |
| |
| /** |
| * Use the list of tokens in the state[] array to find global GL state |
| * and return it in <value>. Usually, four values are returned in <value> |
| * but matrix queries may return as many as 16 values. |
| * This function is used for ARB vertex/fragment programs. |
| * The program parser will produce the state[] values. |
| */ |
| static void |
| _mesa_fetch_state(GLcontext *ctx, const gl_state_index state[], |
| GLfloat *value) |
| { |
| switch (state[0]) { |
| case STATE_MATERIAL: |
| { |
| /* state[1] is either 0=front or 1=back side */ |
| const GLuint face = (GLuint) state[1]; |
| const struct gl_material *mat = &ctx->Light.Material; |
| ASSERT(face == 0 || face == 1); |
| /* we rely on tokens numbered so that _BACK_ == _FRONT_+ 1 */ |
| ASSERT(MAT_ATTRIB_FRONT_AMBIENT + 1 == MAT_ATTRIB_BACK_AMBIENT); |
| /* XXX we could get rid of this switch entirely with a little |
| * work in arbprogparse.c's parse_state_single_item(). |
| */ |
| /* state[2] is the material attribute */ |
| switch (state[2]) { |
| case STATE_AMBIENT: |
| COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_AMBIENT + face]); |
| return; |
| case STATE_DIFFUSE: |
| COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_DIFFUSE + face]); |
| return; |
| case STATE_SPECULAR: |
| COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_SPECULAR + face]); |
| return; |
| case STATE_EMISSION: |
| COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_EMISSION + face]); |
| return; |
| case STATE_SHININESS: |
| value[0] = mat->Attrib[MAT_ATTRIB_FRONT_SHININESS + face][0]; |
| value[1] = 0.0F; |
| value[2] = 0.0F; |
| value[3] = 1.0F; |
| return; |
| default: |
| _mesa_problem(ctx, "Invalid material state in fetch_state"); |
| return; |
| } |
| } |
| case STATE_LIGHT: |
| { |
| /* state[1] is the light number */ |
| const GLuint ln = (GLuint) state[1]; |
| /* state[2] is the light attribute */ |
| switch (state[2]) { |
| case STATE_AMBIENT: |
| COPY_4V(value, ctx->Light.Light[ln].Ambient); |
| return; |
| case STATE_DIFFUSE: |
| COPY_4V(value, ctx->Light.Light[ln].Diffuse); |
| return; |
| case STATE_SPECULAR: |
| COPY_4V(value, ctx->Light.Light[ln].Specular); |
| return; |
| case STATE_POSITION: |
| COPY_4V(value, ctx->Light.Light[ln].EyePosition); |
| return; |
| case STATE_ATTENUATION: |
| value[0] = ctx->Light.Light[ln].ConstantAttenuation; |
| value[1] = ctx->Light.Light[ln].LinearAttenuation; |
| value[2] = ctx->Light.Light[ln].QuadraticAttenuation; |
| value[3] = ctx->Light.Light[ln].SpotExponent; |
| return; |
| case STATE_SPOT_DIRECTION: |
| COPY_3V(value, ctx->Light.Light[ln].EyeDirection); |
| value[3] = ctx->Light.Light[ln]._CosCutoff; |
| return; |
| case STATE_HALF: |
| { |
| GLfloat eye_z[] = {0, 0, 1}; |
| |
| /* Compute infinite half angle vector: |
| * half-vector = light_position + (0, 0, 1) |
| * and then normalize. w = 0 |
| * |
| * light.EyePosition.w should be 0 for infinite lights. |
| */ |
| ADD_3V(value, eye_z, ctx->Light.Light[ln].EyePosition); |
| NORMALIZE_3FV(value); |
| value[3] = 0; |
| } |
| return; |
| case STATE_POSITION_NORMALIZED: |
| COPY_4V(value, ctx->Light.Light[ln].EyePosition); |
| NORMALIZE_3FV( value ); |
| return; |
| default: |
| _mesa_problem(ctx, "Invalid light state in fetch_state"); |
| return; |
| } |
| } |
| case STATE_LIGHTMODEL_AMBIENT: |
| COPY_4V(value, ctx->Light.Model.Ambient); |
| return; |
| case STATE_LIGHTMODEL_SCENECOLOR: |
| if (state[1] == 0) { |
| /* front */ |
| GLint i; |
| for (i = 0; i < 3; i++) { |
| value[i] = ctx->Light.Model.Ambient[i] |
| * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT][i] |
| + ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION][i]; |
| } |
| value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; |
| } |
| else { |
| /* back */ |
| GLint i; |
| for (i = 0; i < 3; i++) { |
| value[i] = ctx->Light.Model.Ambient[i] |
| * ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT][i] |
| + ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION][i]; |
| } |
| value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; |
| } |
| return; |
| case STATE_LIGHTPROD: |
| { |
| const GLuint ln = (GLuint) state[1]; |
| const GLuint face = (GLuint) state[2]; |
| GLint i; |
| ASSERT(face == 0 || face == 1); |
| switch (state[3]) { |
| case STATE_AMBIENT: |
| for (i = 0; i < 3; i++) { |
| value[i] = ctx->Light.Light[ln].Ambient[i] * |
| ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i]; |
| } |
| /* [3] = material alpha */ |
| value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3]; |
| return; |
| case STATE_DIFFUSE: |
| for (i = 0; i < 3; i++) { |
| value[i] = ctx->Light.Light[ln].Diffuse[i] * |
| ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][i]; |
| } |
| /* [3] = material alpha */ |
| value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3]; |
| return; |
| case STATE_SPECULAR: |
| for (i = 0; i < 3; i++) { |
| value[i] = ctx->Light.Light[ln].Specular[i] * |
| ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i]; |
| } |
| /* [3] = material alpha */ |
| value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3]; |
| return; |
| default: |
| _mesa_problem(ctx, "Invalid lightprod state in fetch_state"); |
| return; |
| } |
| } |
| case STATE_TEXGEN: |
| { |
| /* state[1] is the texture unit */ |
| const GLuint unit = (GLuint) state[1]; |
| /* state[2] is the texgen attribute */ |
| switch (state[2]) { |
| case STATE_TEXGEN_EYE_S: |
| COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneS); |
| return; |
| case STATE_TEXGEN_EYE_T: |
| COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneT); |
| return; |
| case STATE_TEXGEN_EYE_R: |
| COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneR); |
| return; |
| case STATE_TEXGEN_EYE_Q: |
| COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneQ); |
| return; |
| case STATE_TEXGEN_OBJECT_S: |
| COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneS); |
| return; |
| case STATE_TEXGEN_OBJECT_T: |
| COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneT); |
| return; |
| case STATE_TEXGEN_OBJECT_R: |
| COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneR); |
| return; |
| case STATE_TEXGEN_OBJECT_Q: |
| COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneQ); |
| return; |
| default: |
| _mesa_problem(ctx, "Invalid texgen state in fetch_state"); |
| return; |
| } |
| } |
| case STATE_TEXENV_COLOR: |
| { |
| /* state[1] is the texture unit */ |
| const GLuint unit = (GLuint) state[1]; |
| COPY_4V(value, ctx->Texture.Unit[unit].EnvColor); |
| } |
| return; |
| case STATE_FOG_COLOR: |
| COPY_4V(value, ctx->Fog.Color); |
| return; |
| case STATE_FOG_PARAMS: |
| value[0] = ctx->Fog.Density; |
| value[1] = ctx->Fog.Start; |
| value[2] = ctx->Fog.End; |
| value[3] = 1.0F / (ctx->Fog.End - ctx->Fog.Start); |
| return; |
| case STATE_CLIPPLANE: |
| { |
| const GLuint plane = (GLuint) state[1]; |
| COPY_4V(value, ctx->Transform.EyeUserPlane[plane]); |
| } |
| return; |
| case STATE_POINT_SIZE: |
| value[0] = ctx->Point.Size; |
| value[1] = ctx->Point.MinSize; |
| value[2] = ctx->Point.MaxSize; |
| value[3] = ctx->Point.Threshold; |
| return; |
| case STATE_POINT_ATTENUATION: |
| value[0] = ctx->Point.Params[0]; |
| value[1] = ctx->Point.Params[1]; |
| value[2] = ctx->Point.Params[2]; |
| value[3] = 1.0F; |
| return; |
| case STATE_MATRIX: |
| { |
| /* state[1] = modelview, projection, texture, etc. */ |
| /* state[2] = which texture matrix or program matrix */ |
| /* state[3] = first row to fetch */ |
| /* state[4] = last row to fetch */ |
| /* state[5] = transpose, inverse or invtrans */ |
| |
| const GLmatrix *matrix; |
| const gl_state_index mat = state[1]; |
| const GLuint index = (GLuint) state[2]; |
| const GLuint firstRow = (GLuint) state[3]; |
| const GLuint lastRow = (GLuint) state[4]; |
| const gl_state_index modifier = state[5]; |
| const GLfloat *m; |
| GLuint row, i; |
| if (mat == STATE_MODELVIEW) { |
| matrix = ctx->ModelviewMatrixStack.Top; |
| } |
| else if (mat == STATE_PROJECTION) { |
| matrix = ctx->ProjectionMatrixStack.Top; |
| } |
| else if (mat == STATE_MVP) { |
| matrix = &ctx->_ModelProjectMatrix; |
| } |
| else if (mat == STATE_TEXTURE) { |
| matrix = ctx->TextureMatrixStack[index].Top; |
| } |
| else if (mat == STATE_PROGRAM) { |
| matrix = ctx->ProgramMatrixStack[index].Top; |
| } |
| else { |
| _mesa_problem(ctx, "Bad matrix name in _mesa_fetch_state()"); |
| return; |
| } |
| if (modifier == STATE_MATRIX_INVERSE || |
| modifier == STATE_MATRIX_INVTRANS) { |
| /* Be sure inverse is up to date: |
| */ |
| _math_matrix_alloc_inv( (GLmatrix *) matrix ); |
| _math_matrix_analyse( (GLmatrix*) matrix ); |
| m = matrix->inv; |
| } |
| else { |
| m = matrix->m; |
| } |
| if (modifier == STATE_MATRIX_TRANSPOSE || |
| modifier == STATE_MATRIX_INVTRANS) { |
| for (i = 0, row = firstRow; row <= lastRow; row++) { |
| value[i++] = m[row * 4 + 0]; |
| value[i++] = m[row * 4 + 1]; |
| value[i++] = m[row * 4 + 2]; |
| value[i++] = m[row * 4 + 3]; |
| } |
| } |
| else { |
| for (i = 0, row = firstRow; row <= lastRow; row++) { |
| value[i++] = m[row + 0]; |
| value[i++] = m[row + 4]; |
| value[i++] = m[row + 8]; |
| value[i++] = m[row + 12]; |
| } |
| } |
| } |
| return; |
| case STATE_DEPTH_RANGE: |
| value[0] = ctx->Viewport.Near; /* near */ |
| value[1] = ctx->Viewport.Far; /* far */ |
| value[2] = ctx->Viewport.Far - ctx->Viewport.Near; /* far - near */ |
| value[3] = 0; |
| return; |
| case STATE_FRAGMENT_PROGRAM: |
| { |
| /* state[1] = {STATE_ENV, STATE_LOCAL} */ |
| /* state[2] = parameter index */ |
| const int idx = (int) state[2]; |
| switch (state[1]) { |
| case STATE_ENV: |
| COPY_4V(value, ctx->FragmentProgram.Parameters[idx]); |
| break; |
| case STATE_LOCAL: |
| COPY_4V(value, ctx->FragmentProgram.Current->Base.LocalParams[idx]); |
| break; |
| default: |
| _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()"); |
| return; |
| } |
| } |
| return; |
| |
| case STATE_VERTEX_PROGRAM: |
| { |
| /* state[1] = {STATE_ENV, STATE_LOCAL} */ |
| /* state[2] = parameter index */ |
| const int idx = (int) state[2]; |
| switch (state[1]) { |
| case STATE_ENV: |
| COPY_4V(value, ctx->VertexProgram.Parameters[idx]); |
| break; |
| case STATE_LOCAL: |
| COPY_4V(value, ctx->VertexProgram.Current->Base.LocalParams[idx]); |
| break; |
| default: |
| _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()"); |
| return; |
| } |
| } |
| return; |
| |
| case STATE_INTERNAL: |
| { |
| switch (state[1]) { |
| case STATE_NORMAL_SCALE: |
| ASSIGN_4V(value, ctx->_ModelViewInvScale, 0, 0, 1); |
| break; |
| case STATE_TEXRECT_SCALE: { |
| const int unit = (int) state[2]; |
| const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; |
| if (texObj) { |
| struct gl_texture_image *texImage = texObj->Image[0][0]; |
| ASSIGN_4V(value, 1.0 / texImage->Width, 1.0 / texImage->Height, 0, 1); |
| } |
| break; |
| } |
| default: |
| /* unknown state indexes are silently ignored |
| * should be handled by the driver. |
| */ |
| return; |
| } |
| } |
| return; |
| |
| default: |
| _mesa_problem(ctx, "Invalid state in _mesa_fetch_state"); |
| return; |
| } |
| } |
| |
| |
| /** |
| * Return a bitmask of the Mesa state flags (_NEW_* values) which would |
| * indicate that the given context state may have changed. |
| * The bitmask is used during validation to determine if we need to update |
| * vertex/fragment program parameters (like "state.material.color") when |
| * some GL state has changed. |
| */ |
| GLbitfield |
| _mesa_program_state_flags(const GLint state[]) |
| { |
| switch (state[0]) { |
| case STATE_MATERIAL: |
| case STATE_LIGHT: |
| case STATE_LIGHTMODEL_AMBIENT: |
| case STATE_LIGHTMODEL_SCENECOLOR: |
| case STATE_LIGHTPROD: |
| return _NEW_LIGHT; |
| |
| case STATE_TEXGEN: |
| case STATE_TEXENV_COLOR: |
| return _NEW_TEXTURE; |
| |
| case STATE_FOG_COLOR: |
| case STATE_FOG_PARAMS: |
| return _NEW_FOG; |
| |
| case STATE_CLIPPLANE: |
| return _NEW_TRANSFORM; |
| |
| case STATE_POINT_SIZE: |
| case STATE_POINT_ATTENUATION: |
| return _NEW_POINT; |
| |
| case STATE_MATRIX: |
| switch (state[1]) { |
| case STATE_MODELVIEW: |
| return _NEW_MODELVIEW; |
| case STATE_PROJECTION: |
| return _NEW_PROJECTION; |
| case STATE_MVP: |
| return _NEW_MODELVIEW | _NEW_PROJECTION; |
| case STATE_TEXTURE: |
| return _NEW_TEXTURE_MATRIX; |
| case STATE_PROGRAM: |
| return _NEW_TRACK_MATRIX; |
| default: |
| _mesa_problem(NULL, |
| "unexpected matrix in _mesa_program_state_flags()"); |
| return 0; |
| } |
| |
| case STATE_DEPTH_RANGE: |
| return _NEW_VIEWPORT; |
| |
| case STATE_FRAGMENT_PROGRAM: |
| case STATE_VERTEX_PROGRAM: |
| return _NEW_PROGRAM; |
| |
| case STATE_INTERNAL: |
| switch (state[1]) { |
| case STATE_NORMAL_SCALE: |
| return _NEW_MODELVIEW; |
| case STATE_TEXRECT_SCALE: |
| return _NEW_TEXTURE; |
| default: |
| /* unknown state indexes are silently ignored and |
| * no flag set, since it is handled by the driver. |
| */ |
| return 0; |
| } |
| |
| default: |
| _mesa_problem(NULL, "unexpected state[0] in make_state_flags()"); |
| return 0; |
| } |
| } |
| |
| |
| static void |
| append(char *dst, const char *src) |
| { |
| while (*dst) |
| dst++; |
| while (*src) |
| *dst++ = *src++; |
| *dst = 0; |
| } |
| |
| |
| static void |
| append_token(char *dst, gl_state_index k) |
| { |
| switch (k) { |
| case STATE_MATERIAL: |
| append(dst, "material."); |
| break; |
| case STATE_LIGHT: |
| append(dst, "light"); |
| break; |
| case STATE_LIGHTMODEL_AMBIENT: |
| append(dst, "lightmodel.ambient"); |
| break; |
| case STATE_LIGHTMODEL_SCENECOLOR: |
| break; |
| case STATE_LIGHTPROD: |
| append(dst, "lightprod"); |
| break; |
| case STATE_TEXGEN: |
| append(dst, "texgen"); |
| break; |
| case STATE_FOG_COLOR: |
| append(dst, "fog.color"); |
| break; |
| case STATE_FOG_PARAMS: |
| append(dst, "fog.params"); |
| break; |
| case STATE_CLIPPLANE: |
| append(dst, "clip"); |
| break; |
| case STATE_POINT_SIZE: |
| append(dst, "point.size"); |
| break; |
| case STATE_POINT_ATTENUATION: |
| append(dst, "point.attenuation"); |
| break; |
| case STATE_MATRIX: |
| append(dst, "matrix."); |
| break; |
| case STATE_MODELVIEW: |
| append(dst, "modelview"); |
| break; |
| case STATE_PROJECTION: |
| append(dst, "projection"); |
| break; |
| case STATE_MVP: |
| append(dst, "mvp"); |
| break; |
| case STATE_TEXTURE: |
| append(dst, "texture"); |
| break; |
| case STATE_PROGRAM: |
| append(dst, "program"); |
| break; |
| case STATE_MATRIX_INVERSE: |
| append(dst, ".inverse"); |
| break; |
| case STATE_MATRIX_TRANSPOSE: |
| append(dst, ".transpose"); |
| break; |
| case STATE_MATRIX_INVTRANS: |
| append(dst, ".invtrans"); |
| break; |
| case STATE_AMBIENT: |
| append(dst, "ambient"); |
| break; |
| case STATE_DIFFUSE: |
| append(dst, "diffuse"); |
| break; |
| case STATE_SPECULAR: |
| append(dst, "specular"); |
| break; |
| case STATE_EMISSION: |
| append(dst, "emission"); |
| break; |
| case STATE_SHININESS: |
| append(dst, "shininess"); |
| break; |
| case STATE_HALF: |
| append(dst, "half"); |
| break; |
| case STATE_POSITION: |
| append(dst, ".position"); |
| break; |
| case STATE_ATTENUATION: |
| append(dst, ".attenuation"); |
| break; |
| case STATE_SPOT_DIRECTION: |
| append(dst, ".spot.direction"); |
| break; |
| case STATE_TEXGEN_EYE_S: |
| append(dst, "eye.s"); |
| break; |
| case STATE_TEXGEN_EYE_T: |
| append(dst, "eye.t"); |
| break; |
| case STATE_TEXGEN_EYE_R: |
| append(dst, "eye.r"); |
| break; |
| case STATE_TEXGEN_EYE_Q: |
| append(dst, "eye.q"); |
| break; |
| case STATE_TEXGEN_OBJECT_S: |
| append(dst, "object.s"); |
| break; |
| case STATE_TEXGEN_OBJECT_T: |
| append(dst, "object.t"); |
| break; |
| case STATE_TEXGEN_OBJECT_R: |
| append(dst, "object.r"); |
| break; |
| case STATE_TEXGEN_OBJECT_Q: |
| append(dst, "object.q"); |
| break; |
| case STATE_TEXENV_COLOR: |
| append(dst, "texenv"); |
| break; |
| case STATE_DEPTH_RANGE: |
| append(dst, "depth.range"); |
| break; |
| case STATE_VERTEX_PROGRAM: |
| case STATE_FRAGMENT_PROGRAM: |
| break; |
| case STATE_ENV: |
| append(dst, "env"); |
| break; |
| case STATE_LOCAL: |
| append(dst, "local"); |
| break; |
| case STATE_INTERNAL: |
| case STATE_NORMAL_SCALE: |
| case STATE_POSITION_NORMALIZED: |
| append(dst, "(internal)"); |
| break; |
| default: |
| ; |
| } |
| } |
| |
| static void |
| append_face(char *dst, GLint face) |
| { |
| if (face == 0) |
| append(dst, "front."); |
| else |
| append(dst, "back."); |
| } |
| |
| static void |
| append_index(char *dst, GLint index) |
| { |
| char s[20]; |
| _mesa_sprintf(s, "[%d].", index); |
| append(dst, s); |
| } |
| |
| /** |
| * Make a string from the given state vector. |
| * For example, return "state.matrix.texture[2].inverse". |
| * Use _mesa_free() to deallocate the string. |
| */ |
| const char * |
| _mesa_program_state_string(const GLint state[6]) |
| { |
| char str[1000] = ""; |
| char tmp[30]; |
| |
| append(str, "state."); |
| append_token(str, (gl_state_index) state[0]); |
| |
| switch (state[0]) { |
| case STATE_MATERIAL: |
| append_face(str, state[1]); |
| append_token(str, (gl_state_index) state[2]); |
| break; |
| case STATE_LIGHT: |
| append(str, "light"); |
| append_index(str, state[1]); /* light number [i]. */ |
| append_token(str, (gl_state_index) state[2]); /* coefficients */ |
| break; |
| case STATE_LIGHTMODEL_AMBIENT: |
| append(str, "lightmodel.ambient"); |
| break; |
| case STATE_LIGHTMODEL_SCENECOLOR: |
| if (state[1] == 0) { |
| append(str, "lightmodel.front.scenecolor"); |
| } |
| else { |
| append(str, "lightmodel.back.scenecolor"); |
| } |
| break; |
| case STATE_LIGHTPROD: |
| append_index(str, state[1]); /* light number [i]. */ |
| append_face(str, state[2]); |
| append_token(str, (gl_state_index) state[3]); |
| break; |
| case STATE_TEXGEN: |
| append_index(str, state[1]); /* tex unit [i] */ |
| append_token(str, (gl_state_index) state[2]); /* plane coef */ |
| break; |
| case STATE_TEXENV_COLOR: |
| append_index(str, state[1]); /* tex unit [i] */ |
| append(str, "color"); |
| break; |
| case STATE_FOG_COLOR: |
| case STATE_FOG_PARAMS: |
| break; |
| case STATE_CLIPPLANE: |
| append_index(str, state[1]); /* plane [i] */ |
| append(str, "plane"); |
| break; |
| case STATE_POINT_SIZE: |
| case STATE_POINT_ATTENUATION: |
| break; |
| case STATE_MATRIX: |
| { |
| /* state[1] = modelview, projection, texture, etc. */ |
| /* state[2] = which texture matrix or program matrix */ |
| /* state[3] = first row to fetch */ |
| /* state[4] = last row to fetch */ |
| /* state[5] = transpose, inverse or invtrans */ |
| const gl_state_index mat = (gl_state_index) state[1]; |
| const GLuint index = (GLuint) state[2]; |
| const GLuint firstRow = (GLuint) state[3]; |
| const GLuint lastRow = (GLuint) state[4]; |
| const gl_state_index modifier = (gl_state_index) state[5]; |
| append_token(str, mat); |
| if (index) |
| append_index(str, index); |
| if (modifier) |
| append_token(str, modifier); |
| if (firstRow == lastRow) |
| _mesa_sprintf(tmp, ".row[%d]", firstRow); |
| else |
| _mesa_sprintf(tmp, ".row[%d..%d]", firstRow, lastRow); |
| append(str, tmp); |
| } |
| break; |
| case STATE_DEPTH_RANGE: |
| break; |
| case STATE_FRAGMENT_PROGRAM: |
| case STATE_VERTEX_PROGRAM: |
| /* state[1] = {STATE_ENV, STATE_LOCAL} */ |
| /* state[2] = parameter index */ |
| append_token(str, (gl_state_index) state[1]); |
| append_index(str, state[2]); |
| break; |
| case STATE_INTERNAL: |
| break; |
| default: |
| _mesa_problem(NULL, "Invalid state in _mesa_program_state_string"); |
| break; |
| } |
| |
| return _mesa_strdup(str); |
| } |
| |
| |
| /** |
| * Loop over all the parameters in a parameter list. If the parameter |
| * is a GL state reference, look up the current value of that state |
| * variable and put it into the parameter's Value[4] array. |
| * This would be called at glBegin time when using a fragment program. |
| */ |
| void |
| _mesa_load_state_parameters(GLcontext *ctx, |
| struct gl_program_parameter_list *paramList) |
| { |
| GLuint i; |
| |
| if (!paramList) |
| return; |
| |
| for (i = 0; i < paramList->NumParameters; i++) { |
| if (paramList->Parameters[i].Type == PROGRAM_STATE_VAR) { |
| _mesa_fetch_state(ctx, |
| paramList->Parameters[i].StateIndexes, |
| paramList->ParameterValues[i]); |
| } |
| } |
| } |
| |