summaryrefslogtreecommitdiffstats
path: root/src/mesa/main/shaderobj.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/main/shaderobj.c')
-rw-r--r--src/mesa/main/shaderobj.c386
1 files changed, 386 insertions, 0 deletions
diff --git a/src/mesa/main/shaderobj.c b/src/mesa/main/shaderobj.c
new file mode 100644
index 00000000000..01ed3c5c467
--- /dev/null
+++ b/src/mesa/main/shaderobj.c
@@ -0,0 +1,386 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2004-2008 Brian Paul All Rights Reserved.
+ * Copyright (C) 2009-2010 VMware, Inc. 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 shaderobj.c
+ * \author Brian Paul
+ *
+ */
+
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/dispatch.h"
+#include "main/hash.h"
+#include "main/shaderobj.h"
+#include "shader/program.h"
+#include "shader/prog_parameter.h"
+#include "shader/prog_uniform.h"
+
+
+/**********************************************************************/
+/*** Shader object functions ***/
+/**********************************************************************/
+
+
+/**
+ * Set ptr to point to sh.
+ * If ptr is pointing to another shader, decrement its refcount (and delete
+ * if refcount hits zero).
+ * Then set ptr to point to sh, incrementing its refcount.
+ */
+void
+_mesa_reference_shader(GLcontext *ctx, struct gl_shader **ptr,
+ struct gl_shader *sh)
+{
+ assert(ptr);
+ if (*ptr == sh) {
+ /* no-op */
+ return;
+ }
+ if (*ptr) {
+ /* Unreference the old shader */
+ GLboolean deleteFlag = GL_FALSE;
+ struct gl_shader *old = *ptr;
+
+ ASSERT(old->RefCount > 0);
+ old->RefCount--;
+ /*printf("SHADER DECR %p (%d) to %d\n",
+ (void*) old, old->Name, old->RefCount);*/
+ deleteFlag = (old->RefCount == 0);
+
+ if (deleteFlag) {
+ _mesa_HashRemove(ctx->Shared->ShaderObjects, old->Name);
+ ctx->Driver.DeleteShader(ctx, old);
+ }
+
+ *ptr = NULL;
+ }
+ assert(!*ptr);
+
+ if (sh) {
+ /* reference new */
+ sh->RefCount++;
+ /*printf("SHADER INCR %p (%d) to %d\n",
+ (void*) sh, sh->Name, sh->RefCount);*/
+ *ptr = sh;
+ }
+}
+
+
+/**
+ * Allocate a new gl_shader object, initialize it.
+ * Called via ctx->Driver.NewShader()
+ */
+static struct gl_shader *
+_mesa_new_shader(GLcontext *ctx, GLuint name, GLenum type)
+{
+ struct gl_shader *shader;
+ assert(type == GL_FRAGMENT_SHADER || type == GL_VERTEX_SHADER);
+ shader = CALLOC_STRUCT(gl_shader);
+ if (shader) {
+ shader->Type = type;
+ shader->Name = name;
+ shader->RefCount = 1;
+ }
+ return shader;
+}
+
+
+/**
+ * Delete a shader object.
+ * Called via ctx->Driver.DeleteShader().
+ */
+static void
+__mesa_delete_shader(GLcontext *ctx, struct gl_shader *sh)
+{
+ if (sh->Source)
+ free((void *) sh->Source);
+ if (sh->InfoLog)
+ free(sh->InfoLog);
+ _mesa_reference_program(ctx, &sh->Program, NULL);
+ free(sh);
+}
+
+
+/**
+ * Lookup a GLSL shader object.
+ */
+struct gl_shader *
+_mesa_lookup_shader(GLcontext *ctx, GLuint name)
+{
+ if (name) {
+ struct gl_shader *sh = (struct gl_shader *)
+ _mesa_HashLookup(ctx->Shared->ShaderObjects, name);
+ /* Note that both gl_shader and gl_shader_program objects are kept
+ * in the same hash table. Check the object's type to be sure it's
+ * what we're expecting.
+ */
+ if (sh && sh->Type == GL_SHADER_PROGRAM_MESA) {
+ return NULL;
+ }
+ return sh;
+ }
+ return NULL;
+}
+
+
+/**
+ * As above, but record an error if shader is not found.
+ */
+struct gl_shader *
+_mesa_lookup_shader_err(GLcontext *ctx, GLuint name, const char *caller)
+{
+ if (!name) {
+ _mesa_error(ctx, GL_INVALID_VALUE, caller);
+ return NULL;
+ }
+ else {
+ struct gl_shader *sh = (struct gl_shader *)
+ _mesa_HashLookup(ctx->Shared->ShaderObjects, name);
+ if (!sh) {
+ _mesa_error(ctx, GL_INVALID_VALUE, caller);
+ return NULL;
+ }
+ if (sh->Type == GL_SHADER_PROGRAM_MESA) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, caller);
+ return NULL;
+ }
+ return sh;
+ }
+}
+
+
+
+/**********************************************************************/
+/*** Shader Program object functions ***/
+/**********************************************************************/
+
+
+/**
+ * Set ptr to point to shProg.
+ * If ptr is pointing to another object, decrement its refcount (and delete
+ * if refcount hits zero).
+ * Then set ptr to point to shProg, incrementing its refcount.
+ */
+void
+_mesa_reference_shader_program(GLcontext *ctx,
+ struct gl_shader_program **ptr,
+ struct gl_shader_program *shProg)
+{
+ assert(ptr);
+ if (*ptr == shProg) {
+ /* no-op */
+ return;
+ }
+ if (*ptr) {
+ /* Unreference the old shader program */
+ GLboolean deleteFlag = GL_FALSE;
+ struct gl_shader_program *old = *ptr;
+
+ ASSERT(old->RefCount > 0);
+ old->RefCount--;
+#if 0
+ printf("ShaderProgram %p ID=%u RefCount-- to %d\n",
+ (void *) old, old->Name, old->RefCount);
+#endif
+ deleteFlag = (old->RefCount == 0);
+
+ if (deleteFlag) {
+ _mesa_HashRemove(ctx->Shared->ShaderObjects, old->Name);
+ ctx->Driver.DeleteShaderProgram(ctx, old);
+ }
+
+ *ptr = NULL;
+ }
+ assert(!*ptr);
+
+ if (shProg) {
+ shProg->RefCount++;
+#if 0
+ printf("ShaderProgram %p ID=%u RefCount++ to %d\n",
+ (void *) shProg, shProg->Name, shProg->RefCount);
+#endif
+ *ptr = shProg;
+ }
+}
+
+
+/**
+ * Allocate a new gl_shader_program object, initialize it.
+ * Called via ctx->Driver.NewShaderProgram()
+ */
+static struct gl_shader_program *
+_mesa_new_shader_program(GLcontext *ctx, GLuint name)
+{
+ struct gl_shader_program *shProg;
+ shProg = CALLOC_STRUCT(gl_shader_program);
+ if (shProg) {
+ shProg->Type = GL_SHADER_PROGRAM_MESA;
+ shProg->Name = name;
+ shProg->RefCount = 1;
+ shProg->Attributes = _mesa_new_parameter_list();
+ }
+ return shProg;
+}
+
+
+/**
+ * Clear (free) the shader program state that gets produced by linking.
+ */
+void
+_mesa_clear_shader_program_data(GLcontext *ctx,
+ struct gl_shader_program *shProg)
+{
+ _mesa_reference_vertprog(ctx, &shProg->VertexProgram, NULL);
+ _mesa_reference_fragprog(ctx, &shProg->FragmentProgram, NULL);
+
+ if (shProg->Uniforms) {
+ _mesa_free_uniform_list(shProg->Uniforms);
+ shProg->Uniforms = NULL;
+ }
+
+ if (shProg->Varying) {
+ _mesa_free_parameter_list(shProg->Varying);
+ shProg->Varying = NULL;
+ }
+}
+
+
+/**
+ * Free all the data that hangs off a shader program object, but not the
+ * object itself.
+ */
+void
+_mesa_free_shader_program_data(GLcontext *ctx,
+ struct gl_shader_program *shProg)
+{
+ GLuint i;
+
+ assert(shProg->Type == GL_SHADER_PROGRAM_MESA);
+
+ _mesa_clear_shader_program_data(ctx, shProg);
+
+ if (shProg->Attributes) {
+ _mesa_free_parameter_list(shProg->Attributes);
+ shProg->Attributes = NULL;
+ }
+
+ /* detach shaders */
+ for (i = 0; i < shProg->NumShaders; i++) {
+ _mesa_reference_shader(ctx, &shProg->Shaders[i], NULL);
+ }
+ shProg->NumShaders = 0;
+
+ if (shProg->Shaders) {
+ free(shProg->Shaders);
+ shProg->Shaders = NULL;
+ }
+
+ if (shProg->InfoLog) {
+ free(shProg->InfoLog);
+ shProg->InfoLog = NULL;
+ }
+
+ /* Transform feedback varying vars */
+ for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) {
+ free(shProg->TransformFeedback.VaryingNames[i]);
+ }
+ free(shProg->TransformFeedback.VaryingNames);
+ shProg->TransformFeedback.VaryingNames = NULL;
+ shProg->TransformFeedback.NumVarying = 0;
+}
+
+
+/**
+ * Free/delete a shader program object.
+ * Called via ctx->Driver.DeleteShaderProgram().
+ */
+static void
+__mesa_delete_shader_program(GLcontext *ctx, struct gl_shader_program *shProg)
+{
+ _mesa_free_shader_program_data(ctx, shProg);
+
+ free(shProg);
+}
+
+
+/**
+ * Lookup a GLSL program object.
+ */
+struct gl_shader_program *
+_mesa_lookup_shader_program(GLcontext *ctx, GLuint name)
+{
+ struct gl_shader_program *shProg;
+ if (name) {
+ shProg = (struct gl_shader_program *)
+ _mesa_HashLookup(ctx->Shared->ShaderObjects, name);
+ /* Note that both gl_shader and gl_shader_program objects are kept
+ * in the same hash table. Check the object's type to be sure it's
+ * what we're expecting.
+ */
+ if (shProg && shProg->Type != GL_SHADER_PROGRAM_MESA) {
+ return NULL;
+ }
+ return shProg;
+ }
+ return NULL;
+}
+
+
+/**
+ * As above, but record an error if program is not found.
+ */
+struct gl_shader_program *
+_mesa_lookup_shader_program_err(GLcontext *ctx, GLuint name,
+ const char *caller)
+{
+ if (!name) {
+ _mesa_error(ctx, GL_INVALID_VALUE, caller);
+ return NULL;
+ }
+ else {
+ struct gl_shader_program *shProg = (struct gl_shader_program *)
+ _mesa_HashLookup(ctx->Shared->ShaderObjects, name);
+ if (!shProg) {
+ _mesa_error(ctx, GL_INVALID_VALUE, caller);
+ return NULL;
+ }
+ if (shProg->Type != GL_SHADER_PROGRAM_MESA) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, caller);
+ return NULL;
+ }
+ return shProg;
+ }
+}
+
+
+void
+_mesa_init_shader_object_functions(struct dd_function_table *driver)
+{
+ driver->NewShader = _mesa_new_shader;
+ driver->DeleteShader = __mesa_delete_shader;
+ driver->NewShaderProgram = _mesa_new_shader_program;
+ driver->DeleteShaderProgram = __mesa_delete_shader_program;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 23:48:13 +0000