+++ /dev/null
-/*
- * Mesa 3-D graphics library
- * Version: 6.0
- *
- * Copyright (C) 1999-2004 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 program.c
- * Vertex and fragment program support functions.
- * \author Brian Paul
- */
-
-
-#include "glheader.h"
-#include "context.h"
-#include "hash.h"
-#include "imports.h"
-#include "macros.h"
-#include "mtypes.h"
-#include "program.h"
-#include "nvfragparse.h"
-#include "nvfragprog.h"
-#include "nvvertparse.h"
-
-
-/**********************************************************************/
-/* Utility functions */
-/**********************************************************************/
-
-
-/**
- * Init context's program state
- */
-void
-_mesa_init_program(GLcontext *ctx)
-{
- GLuint i;
-
- ctx->Program.ErrorPos = -1;
- ctx->Program.ErrorString = _mesa_strdup("");
-
-#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
- ctx->VertexProgram.Enabled = GL_FALSE;
- ctx->VertexProgram.PointSizeEnabled = GL_FALSE;
- ctx->VertexProgram.TwoSideEnabled = GL_FALSE;
- ctx->VertexProgram.Current = NULL;
- ctx->VertexProgram.Current = (struct vertex_program *) ctx->Shared->DefaultVertexProgram;
- assert(ctx->VertexProgram.Current);
- ctx->VertexProgram.Current->Base.RefCount++;
- for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) {
- ctx->VertexProgram.TrackMatrix[i] = GL_NONE;
- ctx->VertexProgram.TrackMatrixTransform[i] = GL_IDENTITY_NV;
- }
-#endif
-
-#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
- ctx->FragmentProgram.Enabled = GL_FALSE;
- ctx->FragmentProgram.Current = (struct fragment_program *) ctx->Shared->DefaultFragmentProgram;
- assert(ctx->FragmentProgram.Current);
- ctx->FragmentProgram.Current->Base.RefCount++;
-#endif
-}
-
-
-/**
- * Set the vertex/fragment program error state (position and error string).
- * This is generally called from within the parsers.
- */
-void
-_mesa_set_program_error(GLcontext *ctx, GLint pos, const char *string)
-{
- ctx->Program.ErrorPos = pos;
- _mesa_free((void *) ctx->Program.ErrorString);
- if (!string)
- string = "";
- ctx->Program.ErrorString = _mesa_strdup(string);
-}
-
-
-/**
- * Find the line number and column for 'pos' within 'string'.
- * Return a copy of the line which contains 'pos'. Free the line with
- * _mesa_free().
- * \param string the program string
- * \param pos the position within the string
- * \param line returns the line number corresponding to 'pos'.
- * \param col returns the column number corresponding to 'pos'.
- * \return copy of the line containing 'pos'.
- */
-const GLubyte *
-_mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
- GLint *line, GLint *col)
-{
- const GLubyte *lineStart = string;
- const GLubyte *p = string;
- GLubyte *s;
- int len;
-
- *line = 1;
-
- while (p != pos) {
- if (*p == (GLubyte) '\n') {
- (*line)++;
- lineStart = p + 1;
- }
- p++;
- }
-
- *col = (pos - lineStart) + 1;
-
- /* return copy of this line */
- while (*p != 0 && *p != '\n')
- p++;
- len = p - lineStart;
- s = (GLubyte *) _mesa_malloc(len + 1);
- _mesa_memcpy(s, lineStart, len);
- s[len] = 0;
-
- return s;
-}
-
-
-static struct program * _mesa_init_program_struct( GLcontext *ctx,
- struct program *prog,
- GLenum target, GLuint id)
-{
- if (prog) {
- prog->Id = id;
- prog->Target = target;
- prog->Resident = GL_TRUE;
- prog->RefCount = 1;
- }
-
- return prog;
-}
-
-struct program * _mesa_init_fragment_program( GLcontext *ctx,
- struct fragment_program *prog,
- GLenum target, GLuint id)
-{
- if (prog)
- return _mesa_init_program_struct( ctx, &prog->Base, target, id );
- else
- return NULL;
-}
-
-struct program * _mesa_init_vertex_program( GLcontext *ctx,
- struct vertex_program *prog,
- GLenum target, GLuint id)
-{
- if (prog)
- return _mesa_init_program_struct( ctx, &prog->Base, target, id );
- else
- return NULL;
-}
-
-
-/**
- * Allocate and initialize a new fragment/vertex program object but
- * don't put it into the program hash table. Called via
- * ctx->Driver.NewProgram. May be overridden (ie. replaced) by a
- * device driver function to implement OO deriviation with additional
- * types not understood by this function.
- *
- * \param ctx context
- * \param id program id/number
- * \param target program target/type
- * \return pointer to new program object
- */
-struct program *
-_mesa_new_program(GLcontext *ctx, GLenum target, GLuint id)
-{
- switch (target) {
- case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
- return _mesa_init_vertex_program( ctx, CALLOC_STRUCT(vertex_program),
- target, id );
-
- case GL_FRAGMENT_PROGRAM_NV:
- case GL_FRAGMENT_PROGRAM_ARB:
- return _mesa_init_fragment_program( ctx, CALLOC_STRUCT(fragment_program),
- target, id );
-
- default:
- _mesa_problem(ctx, "bad target in _mesa_new_program");
- return NULL;
- }
-}
-
-
-/**
- * Delete a program and remove it from the hash table, ignoring the
- * reference count.
- * Called via ctx->Driver.DeleteProgram. May be wrapped (OO deriviation)
- * by a device driver function.
- */
-void
-_mesa_delete_program(GLcontext *ctx, struct program *prog)
-{
- ASSERT(prog);
-
- if (prog->String)
- _mesa_free(prog->String);
- if (prog->Target == GL_VERTEX_PROGRAM_NV ||
- prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
- struct vertex_program *vprog = (struct vertex_program *) prog;
- if (vprog->Instructions)
- _mesa_free(vprog->Instructions);
- }
- else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
- prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
- struct fragment_program *fprog = (struct fragment_program *) prog;
- if (fprog->Instructions)
- _mesa_free(fprog->Instructions);
- if (fprog->Parameters) {
- _mesa_free_parameter_list(fprog->Parameters);
- }
- }
- _mesa_free(prog);
-}
-
-
-
-/**********************************************************************/
-/* Program parameter functions */
-/**********************************************************************/
-
-struct program_parameter_list *
-_mesa_new_parameter_list(void)
-{
- return (struct program_parameter_list *)
- _mesa_calloc(sizeof(struct program_parameter_list));
-}
-
-
-/**
- * Free a parameter list and all its parameters
- */
-void
-_mesa_free_parameter_list(struct program_parameter_list *paramList)
-{
- _mesa_free_parameters(paramList);
- _mesa_free(paramList);
-}
-
-
-/**
- * Free all the parameters in the given list, but don't free the
- * paramList structure itself.
- */
-void
-_mesa_free_parameters(struct program_parameter_list *paramList)
-{
- GLuint i;
- for (i = 0; i < paramList->NumParameters; i++) {
- _mesa_free((void *) paramList->Parameters[i].Name);
- }
- _mesa_free(paramList->Parameters);
- paramList->NumParameters = 0;
- paramList->Parameters = NULL;
-}
-
-
-/**
- * Helper function used by the functions below.
- */
-static GLint
-add_parameter(struct program_parameter_list *paramList,
- const char *name, const GLfloat values[4],
- enum parameter_type type)
-{
- const GLuint n = paramList->NumParameters;
-
- paramList->Parameters = (struct program_parameter *)
- _mesa_realloc(paramList->Parameters,
- n * sizeof(struct program_parameter),
- (n + 1) * sizeof(struct program_parameter));
- if (!paramList->Parameters) {
- /* out of memory */
- paramList->NumParameters = 0;
- return -1;
- }
- else {
- paramList->NumParameters = n + 1;
- paramList->Parameters[n].Name = _mesa_strdup(name);
- paramList->Parameters[n].Type = type;
- if (values)
- COPY_4V(paramList->Parameters[n].Values, values);
- return (GLint) n;
- }
-}
-
-
-/**
- * Add a new named program parameter (Ex: NV_fragment_program DEFINE statement)
- * \return index of the new entry in the parameter list
- */
-GLint
-_mesa_add_named_parameter(struct program_parameter_list *paramList,
- const char *name, const GLfloat values[4])
-{
- return add_parameter(paramList, name, values, NAMED_PARAMETER);
-}
-
-
-/**
- * Add a new unnamed constant to the parameter list.
- * \param paramList - the parameter list
- * \param values - four float values
- * \return index of the new parameter.
- */
-GLint
-_mesa_add_named_constant(struct program_parameter_list *paramList,
- const char *name, const GLfloat values[4])
-{
- return add_parameter(paramList, name, values, CONSTANT);
-}
-
-
-/**
- * Add a new unnamed constant to the parameter list.
- * \param paramList - the parameter list
- * \param values - four float values
- * \return index of the new parameter.
- */
-GLint
-_mesa_add_unnamed_constant(struct program_parameter_list *paramList,
- const GLfloat values[4])
-{
- /* generate a new dummy name */
- static GLuint n = 0;
- char name[20];
- _mesa_sprintf(name, "constant%d", n);
- n++;
- /* store it */
- return add_parameter(paramList, name, values, CONSTANT);
-}
-
-
-/**
- * Add a new state reference to the parameter list.
- * \param paramList - the parameter list
- * \param state - an array of 6 state tokens
- *
- * \return index of the new parameter.
- */
-GLint
-_mesa_add_state_reference(struct program_parameter_list *paramList,
- GLint *stateTokens)
-{
- /* XXX Should we parse <stateString> here and produce the parameter's
- * list of STATE_* tokens here, or in the parser?
- */
- GLint a, idx;
-
- idx = add_parameter(paramList, "Some State", NULL, STATE);
-
- for (a=0; a<6; a++)
- paramList->Parameters[idx].StateIndexes[a] = (enum state_index) stateTokens[a];
-
- return idx;
-}
-
-
-/**
- * Lookup a parameter value by name in the given parameter list.
- * \return pointer to the float[4] values.
- */
-GLfloat *
-_mesa_lookup_parameter_value(struct program_parameter_list *paramList,
- GLsizei nameLen, const char *name)
-{
- GLuint i;
-
- if (!paramList)
- return NULL;
-
- if (nameLen == -1) {
- /* name is null-terminated */
- for (i = 0; i < paramList->NumParameters; i++) {
- if (_mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
- return paramList->Parameters[i].Values;
- }
- }
- else {
- /* name is not null-terminated, use nameLen */
- for (i = 0; i < paramList->NumParameters; i++) {
- if (_mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
- && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
- return paramList->Parameters[i].Values;
- }
- }
- return NULL;
-}
-
-
-/**
- * Lookup a parameter index by name in the given parameter list.
- * \return index of parameter in the list.
- */
-GLint
-_mesa_lookup_parameter_index(struct program_parameter_list *paramList,
- GLsizei nameLen, const char *name)
-{
- GLint i;
-
- if (!paramList)
- return -1;
-
- if (nameLen == -1) {
- /* name is null-terminated */
- for (i = 0; i < (GLint) paramList->NumParameters; i++) {
- if (_mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
- return i;
- }
- }
- else {
- /* name is not null-terminated, use nameLen */
- for (i = 0; i < (GLint) paramList->NumParameters; i++) {
- if (_mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
- && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
- return i;
- }
- }
- return -1;
-}
-
-
-/**
- * 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 enum 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];
- /* state[2] is the material attribute */
- switch (state[2]) {
- case STATE_AMBIENT:
- if (face == 0)
- COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT]);
- else
- COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT]);
- return;
- case STATE_DIFFUSE:
- if (face == 0)
- COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE]);
- else
- COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE]);
- return;
- case STATE_SPECULAR:
- if (face == 0)
- COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR]);
- else
- COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SPECULAR]);
- return;
- case STATE_EMISSION:
- if (face == 0)
- COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION]);
- else
- COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION]);
- return;
- case STATE_SHININESS:
- if (face == 0)
- value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0];
- else
- value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][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;
- }
- };
- 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_4V(value, ctx->Light.Light[ln].EyeDirection);
- 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;
- default:
- _mesa_problem(ctx, "Invalid light state in fetch_state");
- return;
- }
- }
- 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 < 4; 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];
- }
- }
- else {
- /* back */
- GLint i;
- for (i = 0; i < 4; 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];
- }
- }
- 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;
- }
- }
- 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;
- }
- }
- 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 column to fetch */
- /* state[4] = last column to fetch */
- /* state[5] = transpose, inverse or invtrans */
-
- const GLmatrix *matrix;
- const enum state_index mat = state[1];
- const GLuint index = (GLuint) state[2];
- const GLuint first = (GLuint) state[3];
- const GLuint last = (GLuint) state[4];
- const enum 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) {
- /* XXX be sure inverse is up to date */
- m = matrix->inv;
- }
- else {
- m = matrix->m;
- }
- if (modifier == STATE_MATRIX_TRANSPOSE ||
- modifier == STATE_MATRIX_INVTRANS) {
- for (i = 0, row = first; row <= last; 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 = first; row <= last; 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 */
- int idx = 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 */
- int idx = 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;
- default:
- _mesa_problem(ctx, "Invalid state in fetch_state");
- return;
- }
-}
-
-
-/**
- * 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 program_parameter_list *paramList)
-{
- GLuint i;
-
- if (!paramList)
- return;
-
- for (i = 0; i < paramList->NumParameters; i++) {
- if (paramList->Parameters[i].Type == STATE) {
- _mesa_fetch_state(ctx, paramList->Parameters[i].StateIndexes,
- paramList->Parameters[i].Values);
- }
- }
-}
-
-
-
-/**********************************************************************/
-/* API functions */
-/**********************************************************************/
-
-
-/**
- * Bind a program (make it current)
- * \note Called from the GL API dispatcher by both glBindProgramNV
- * and glBindProgramARB.
- */
-void GLAPIENTRY
-_mesa_BindProgram(GLenum target, GLuint id)
-{
- struct program *prog;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- FLUSH_VERTICES(ctx, _NEW_PROGRAM);
-
- if ((target == GL_VERTEX_PROGRAM_NV
- && ctx->Extensions.NV_vertex_program) ||
- (target == GL_VERTEX_PROGRAM_ARB
- && ctx->Extensions.ARB_vertex_program)) {
- if (ctx->VertexProgram.Current &&
- ctx->VertexProgram.Current->Base.Id == id)
- return;
- /* decrement refcount on previously bound vertex program */
- if (ctx->VertexProgram.Current) {
- ctx->VertexProgram.Current->Base.RefCount--;
- /* and delete if refcount goes below one */
- if (ctx->VertexProgram.Current->Base.RefCount <= 0) {
- ctx->Driver.DeleteProgram(ctx, &(ctx->VertexProgram.Current->Base));
- _mesa_HashRemove(ctx->Shared->Programs, id);
- }
- }
- }
- else if ((target == GL_FRAGMENT_PROGRAM_NV
- && ctx->Extensions.NV_fragment_program) ||
- (target == GL_FRAGMENT_PROGRAM_ARB
- && ctx->Extensions.ARB_fragment_program)) {
- if (ctx->FragmentProgram.Current &&
- ctx->FragmentProgram.Current->Base.Id == id)
- return;
- /* decrement refcount on previously bound fragment program */
- if (ctx->FragmentProgram.Current) {
- ctx->FragmentProgram.Current->Base.RefCount--;
- /* and delete if refcount goes below one */
- if (ctx->FragmentProgram.Current->Base.RefCount <= 0) {
- ctx->Driver.DeleteProgram(ctx, &(ctx->FragmentProgram.Current->Base));
- _mesa_HashRemove(ctx->Shared->Programs, id);
- }
- }
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindProgramNV/ARB(target)");
- return;
- }
-
- /* NOTE: binding to a non-existant program is not an error.
- * That's supposed to be caught in glBegin.
- */
- if (id == 0) {
- /* default program */
- prog = NULL;
- if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB)
- prog = ctx->Shared->DefaultVertexProgram;
- else
- prog = ctx->Shared->DefaultFragmentProgram;
- }
- else {
- prog = (struct program *) _mesa_HashLookup(ctx->Shared->Programs, id);
- if (prog) {
- if (prog->Target == 0) {
- /* prog was allocated with glGenProgramsNV */
- prog->Target = target;
- }
- else if (prog->Target != target) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBindProgramNV/ARB(target mismatch)");
- return;
- }
- }
- else {
- /* allocate a new program now */
- prog = ctx->Driver.NewProgram(ctx, target, id);
- if (!prog) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindProgramNV/ARB");
- return;
- }
- prog->Id = id;
- prog->Target = target;
- prog->Resident = GL_TRUE;
- prog->RefCount = 1;
- _mesa_HashInsert(ctx->Shared->Programs, id, prog);
- }
- }
-
- /* bind now */
- if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB) {
- ctx->VertexProgram.Current = (struct vertex_program *) prog;
- }
- else if (target == GL_FRAGMENT_PROGRAM_NV || target == GL_FRAGMENT_PROGRAM_ARB) {
- ctx->FragmentProgram.Current = (struct fragment_program *) prog;
- }
-
- if (prog)
- prog->RefCount++;
-
- if (ctx->Driver.BindProgram)
- ctx->Driver.BindProgram(ctx, target, prog);
-}
-
-
-/**
- * Delete a list of programs.
- * \note Not compiled into display lists.
- * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
- */
-void GLAPIENTRY
-_mesa_DeletePrograms(GLsizei n, const GLuint *ids)
-{
- GLint i;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (n < 0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" );
- return;
- }
-
- for (i = 0; i < n; i++) {
- if (ids[i] != 0) {
- struct program *prog = (struct program *)
- _mesa_HashLookup(ctx->Shared->Programs, ids[i]);
- if (prog) {
- if (prog->Target == GL_VERTEX_PROGRAM_NV ||
- prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
- if (ctx->VertexProgram.Current &&
- ctx->VertexProgram.Current->Base.Id == ids[i]) {
- /* unbind this currently bound program */
- _mesa_BindProgram(prog->Target, 0);
- }
- }
- else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
- prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
- if (ctx->FragmentProgram.Current &&
- ctx->FragmentProgram.Current->Base.Id == ids[i]) {
- /* unbind this currently bound program */
- _mesa_BindProgram(prog->Target, 0);
- }
- }
- else {
- _mesa_problem(ctx, "bad target in glDeleteProgramsNV");
- return;
- }
- prog->RefCount--;
- if (prog->RefCount <= 0) {
- ctx->Driver.DeleteProgram(ctx, prog);
- }
- }
- else {
- /* This is necessary as we can't tell from HashLookup
- * whether the entry exists with data == 0, or if it
- * doesn't exist at all. As GenPrograms creates the first
- * case below, need to call Remove() to avoid memory leak:
- */
- _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
- }
- }
- }
-}
-
-
-/**
- * Generate a list of new program identifiers.
- * \note Not compiled into display lists.
- * \note Called by both glGenProgramsNV and glGenProgramsARB.
- */
-void GLAPIENTRY
-_mesa_GenPrograms(GLsizei n, GLuint *ids)
-{
- GLuint first;
- GLuint i;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (n < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
- return;
- }
-
- if (!ids)
- return;
-
- first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
-
- for (i = 0; i < (GLuint) n; i++) {
- _mesa_HashInsert(ctx->Shared->Programs, first + i, 0);
- }
-
- /* Return the program names */
- for (i = 0; i < (GLuint) n; i++) {
- ids[i] = first + i;
- }
-}
-
-
-/**
- * Determine if id names a program.
- * \note Not compiled into display lists.
- * \note Called from both glIsProgramNV and glIsProgramARB.
- * \param id is the program identifier
- * \return GL_TRUE if id is a program, else GL_FALSE.
- */
-GLboolean GLAPIENTRY
-_mesa_IsProgram(GLuint id)
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
-
- if (id == 0)
- return GL_FALSE;
-
- if (_mesa_HashLookup(ctx->Shared->Programs, id))
- return GL_TRUE;
- else
- return GL_FALSE;
-}
-
-
-
-/**********************************************************************/
-/* GL_MESA_program_debug extension */
-/**********************************************************************/
-
-
-/* XXX temporary */
-void
-glProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
- GLvoid *data)
-{
- _mesa_ProgramCallbackMESA(target, callback, data);
-}
-
-
-void
-_mesa_ProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
- GLvoid *data)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- switch (target) {
- case GL_FRAGMENT_PROGRAM_ARB:
- if (!ctx->Extensions.ARB_fragment_program) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
- return;
- }
- ctx->FragmentProgram.Callback = callback;
- ctx->FragmentProgram.CallbackData = data;
- break;
- case GL_FRAGMENT_PROGRAM_NV:
- if (!ctx->Extensions.NV_fragment_program) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
- return;
- }
- ctx->FragmentProgram.Callback = callback;
- ctx->FragmentProgram.CallbackData = data;
- break;
- case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
- if (!ctx->Extensions.ARB_vertex_program &&
- !ctx->Extensions.NV_vertex_program) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
- return;
- }
- ctx->VertexProgram.Callback = callback;
- ctx->VertexProgram.CallbackData = data;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
- return;
- }
-}
-
-
-/* XXX temporary */
-void
-glGetProgramRegisterfvMESA(GLenum target,
- GLsizei len, const GLubyte *registerName,
- GLfloat *v)
-{
- _mesa_GetProgramRegisterfvMESA(target, len, registerName, v);
-}
-
-
-void
-_mesa_GetProgramRegisterfvMESA(GLenum target,
- GLsizei len, const GLubyte *registerName,
- GLfloat *v)
-{
- char reg[1000];
- GET_CURRENT_CONTEXT(ctx);
-
- /* We _should_ be inside glBegin/glEnd */
-#if 0
- if (ctx->Driver.CurrentExecPrimitive == PRIM_OUTSIDE_BEGIN_END) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramRegisterfvMESA");
- return;
- }
-#endif
-
- /* make null-terminated copy of registerName */
- len = MIN2((unsigned int) len, sizeof(reg) - 1);
- _mesa_memcpy(reg, registerName, len);
- reg[len] = 0;
-
- switch (target) {
- case GL_VERTEX_PROGRAM_NV:
- if (!ctx->Extensions.ARB_vertex_program &&
- !ctx->Extensions.NV_vertex_program) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetProgramRegisterfvMESA(target)");
- return;
- }
- if (!ctx->VertexProgram.Enabled) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetProgramRegisterfvMESA");
- return;
- }
- /* GL_NV_vertex_program */
- if (reg[0] == 'R') {
- /* Temp register */
- GLint i = _mesa_atoi(reg + 1);
- if (i >= (GLint)ctx->Const.MaxVertexProgramTemps) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glGetProgramRegisterfvMESA(registerName)");
- return;
- }
- COPY_4V(v, ctx->VertexProgram.Temporaries[i]);
- }
- else if (reg[0] == 'v' && reg[1] == '[') {
- /* Vertex Input attribute */
- GLuint i;
- for (i = 0; i < ctx->Const.MaxVertexProgramAttribs; i++) {
- const char *name = _mesa_nv_vertex_input_register_name(i);
- char number[10];
- sprintf(number, "%d", i);
- if (_mesa_strncmp(reg + 2, name, 4) == 0 ||
- _mesa_strncmp(reg + 2, number, _mesa_strlen(number)) == 0) {
- COPY_4V(v, ctx->VertexProgram.Inputs[i]);
- return;
- }
- }
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glGetProgramRegisterfvMESA(registerName)");
- return;
- }
- else if (reg[0] == 'o' && reg[1] == '[') {
- /* Vertex output attribute */
- }
- /* GL_ARB_vertex_program */
- else if (_mesa_strncmp(reg, "vertex.", 7) == 0) {
-
- }
- else {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glGetProgramRegisterfvMESA(registerName)");
- return;
- }
- break;
- case GL_FRAGMENT_PROGRAM_ARB:
- if (!ctx->Extensions.ARB_fragment_program) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetProgramRegisterfvMESA(target)");
- return;
- }
- if (!ctx->FragmentProgram.Enabled) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetProgramRegisterfvMESA");
- return;
- }
- /* XXX to do */
- break;
- case GL_FRAGMENT_PROGRAM_NV:
- if (!ctx->Extensions.NV_fragment_program) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetProgramRegisterfvMESA(target)");
- return;
- }
- if (!ctx->FragmentProgram.Enabled) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetProgramRegisterfvMESA");
- return;
- }
- if (reg[0] == 'R') {
- /* Temp register */
- GLint i = _mesa_atoi(reg + 1);
- if (i >= (GLint)ctx->Const.MaxFragmentProgramTemps) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glGetProgramRegisterfvMESA(registerName)");
- return;
- }
- COPY_4V(v, ctx->FragmentProgram.Machine.Temporaries[i]);
- }
- else if (reg[0] == 'f' && reg[1] == '[') {
- /* Fragment input attribute */
- GLuint i;
- for (i = 0; i < ctx->Const.MaxFragmentProgramAttribs; i++) {
- const char *name = _mesa_nv_fragment_input_register_name(i);
- if (_mesa_strncmp(reg + 2, name, 4) == 0) {
- COPY_4V(v, ctx->FragmentProgram.Machine.Inputs[i]);
- return;
- }
- }
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glGetProgramRegisterfvMESA(registerName)");
- return;
- }
- else if (_mesa_strcmp(reg, "o[COLR]") == 0) {
- /* Fragment output color */
- COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_COLR]);
- }
- else if (_mesa_strcmp(reg, "o[COLH]") == 0) {
- /* Fragment output color */
- COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_COLH]);
- }
- else if (_mesa_strcmp(reg, "o[DEPR]") == 0) {
- /* Fragment output depth */
- COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_DEPR]);
- }
- else {
- /* try user-defined identifiers */
- const GLfloat *value = _mesa_lookup_parameter_value(
- ctx->FragmentProgram.Current->Parameters, -1, reg);
- if (value) {
- COPY_4V(v, value);
- }
- else {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glGetProgramRegisterfvMESA(registerName)");
- return;
- }
- }
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetProgramRegisterfvMESA(target)");
- return;
- }
-
-}
projects / mesa.git / commitdiff