/**
* Set/replace shader source code. A helper function used by
- * glShaderSource[ARB] and glCreateShaderProgramEXT.
+ * glShaderSource[ARB].
*/
static void
shader_source(struct gl_context *ctx, GLuint shader, const GLchar *source)
static GLcharARB *
read_shader(const char *fname)
{
- const int max = 50*1000;
+ int shader_size = 0;
FILE *f = fopen(fname, "r");
GLcharARB *buffer, *shader;
int len;
return NULL;
}
- buffer = malloc(max);
- len = fread(buffer, 1, max, f);
+ /* allocate enough room for the entire shader */
+ fseek(f, 0, SEEK_END);
+ shader_size = ftell(f);
+ rewind(f);
+ assert(shader_size);
+
+ /* add one for terminating zero */
+ shader_size++;
+
+ buffer = malloc(shader_size);
+ assert(buffer);
+
+ len = fread(buffer, 1, shader_size, f);
buffer[len] = 0;
fclose(f);
shProg = NULL;
}
- /* The "Dependencies on EXT_separate_shader_objects" section of the
- * ARB_separate_shader_object spec says:
+ /* The ARB_separate_shader_object spec says:
*
* "The executable code for an individual shader stage is taken from
* the current program for that stage. If there is a current program
- * object for any shader stage or for uniform updates established by
- * UseProgram, UseShaderProgramEXT, or ActiveProgramEXT, the current
- * program for that stage (if any) is considered current. Otherwise,
- * if there is a bound program pipeline object ..."
+ * object established by UseProgram, that program is considered current
+ * for all stages. Otherwise, if there is a bound program pipeline
+ * object (section 2.14.PPO), the program bound to the appropriate
+ * stage of the pipeline object is considered current."
*/
if (program) {
/* Attach shader state to the binding point */
}
-/**
- * For GL_EXT_separate_shader_objects
- */
-void GLAPIENTRY
-_mesa_UseShaderProgramEXT(GLenum type, GLuint program)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_shader_program *shProg = NULL;
-
- if (!_mesa_validate_shader_target(ctx, type)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glUseShaderProgramEXT(type)");
- return;
- }
-
- if (_mesa_is_xfb_active_and_unpaused(ctx)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glUseShaderProgramEXT(transform feedback is active)");
- return;
- }
-
- if (program) {
- shProg = _mesa_lookup_shader_program_err(ctx, program,
- "glUseShaderProgramEXT");
- if (shProg == NULL)
- return;
-
- if (!shProg->LinkStatus) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glUseShaderProgramEXT(program not linked)");
- return;
- }
- }
-
- /* The "Dependencies on EXT_separate_shader_objects" section of the
- * ARB_separate_shader_object spec says:
- *
- * "The executable code for an individual shader stage is taken from
- * the current program for that stage. If there is a current program
- * object for any shader stage or for uniform updates established by
- * UseProgram, UseShaderProgramEXT, or ActiveProgramEXT, the current
- * program for that stage (if any) is considered current. Otherwise,
- * if there is a bound program pipeline object ..."
- */
- if (program) {
- /* Attach shader state to the binding point */
- _mesa_reference_pipeline_object(ctx, &ctx->_Shader, &ctx->Shader);
- /* Update the program */
- _mesa_use_shader_program(ctx, type, shProg, ctx->_Shader);
- } else {
- /* Must be done first: detach the progam */
- _mesa_use_shader_program(ctx, type, shProg, ctx->_Shader);
-
- /* Nothing remains current */
- if (!ctx->Shader.CurrentProgram[MESA_SHADER_VERTEX] &&
- !ctx->Shader.CurrentProgram[MESA_SHADER_GEOMETRY] &&
- !ctx->Shader.CurrentProgram[MESA_SHADER_FRAGMENT] &&
- !ctx->Shader.ActiveProgram) {
-
- /* Unattach shader_state binding point */
- _mesa_reference_pipeline_object(ctx, &ctx->_Shader,
- ctx->Pipeline.Default);
-
- /* If a pipeline was bound, rebind it */
- if (ctx->Pipeline.Current) {
- _mesa_BindProgramPipeline(ctx->Pipeline.Current->Name);
- }
- }
- }
-}
-
-
-/**
- * For GL_EXT_separate_shader_objects
- */
-void GLAPIENTRY
-_mesa_ActiveProgramEXT(GLuint program)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_shader_program *shProg = (program != 0)
- ? _mesa_lookup_shader_program_err(ctx, program, "glActiveProgramEXT")
- : NULL;
-
- /* The "Dependencies on EXT_separate_shader_objects" section of the
- * ARB_separate_shader_object spec says:
- *
- * "The executable code for an individual shader stage is taken from
- * the current program for that stage. If there is a current program
- * object for any shader stage or for uniform updates established by
- * UseProgram, UseShaderProgramEXT, or ActiveProgramEXT, the current
- * program for that stage (if any) is considered current. Otherwise,
- * if there is a bound program pipeline object ..."
- */
- if (shProg != NULL) {
- /* Attach shader state to the binding point */
- _mesa_reference_pipeline_object(ctx, &ctx->_Shader, &ctx->Shader);
- _mesa_active_program(ctx, shProg, "glActiveProgramEXT");
- } else {
- /* Must be done first: unset the current active progam */
- _mesa_active_program(ctx, shProg, "glActiveProgramEXT");
-
- /* Nothing remains current */
- if (!ctx->Shader.CurrentProgram[MESA_SHADER_VERTEX] &&
- !ctx->Shader.CurrentProgram[MESA_SHADER_GEOMETRY] &&
- !ctx->Shader.CurrentProgram[MESA_SHADER_FRAGMENT] &&
- !ctx->Shader.ActiveProgram) {
-
- /* Unattach shader_state binding point */
- _mesa_reference_pipeline_object(ctx, &ctx->_Shader, ctx->Pipeline.Default);
- /* If a pipeline was bound, rebind it */
- if (ctx->Pipeline.Current) {
- _mesa_BindProgramPipeline(ctx->Pipeline.Current->Name);
- }
- }
- }
-
- return;
-}
-
static GLuint
_mesa_create_shader_program(struct gl_context* ctx, GLboolean separate,
GLenum type, GLsizei count, const GLchar* const *strings)
dst_gp->UsesEndPrimitive = src->Geom.UsesEndPrimitive;
}
break;
+ case MESA_SHADER_FRAGMENT: {
+ struct gl_fragment_program *dst_fp = (struct gl_fragment_program *) dst;
+ dst_fp->FragDepthLayout = src->FragDepthLayout;
+ }
+ break;
case MESA_SHADER_COMPUTE: {
struct gl_compute_program *dst_cp = (struct gl_compute_program *) dst;
int i;
}
}
-
-/**
- * For GL_EXT_separate_shader_objects
- */
-GLuint GLAPIENTRY
-_mesa_CreateShaderProgramEXT(GLenum type, const GLchar *string)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- return _mesa_create_shader_program(ctx, GL_FALSE, type, 1, &string);
-}
-
/**
* ARB_separate_shader_objects: Compile & Link Program
- *
- * Basically the same as _mesa_CreateShaderProgramEXT but with support of
- * multiple strings and sets the SeparateShader flag to true.
*/
GLuint GLAPIENTRY
_mesa_CreateShaderProgramv(GLenum type, GLsizei count,
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