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path: root/mesalib/src/mesa/main/uniforms.c
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Diffstat (limited to 'mesalib/src/mesa/main/uniforms.c')
-rw-r--r--mesalib/src/mesa/main/uniforms.c221
1 files changed, 221 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/uniforms.c b/mesalib/src/mesa/main/uniforms.c
index ccbd753db..f43d0fbee 100644
--- a/mesalib/src/mesa/main/uniforms.c
+++ b/mesalib/src/mesa/main/uniforms.c
@@ -41,6 +41,7 @@
#include "main/shaderapi.h"
#include "main/shaderobj.h"
#include "main/uniforms.h"
+#include "main/enums.h"
#include "ir_uniform.h"
#include "glsl_types.h"
@@ -521,6 +522,16 @@ _mesa_GetUniformLocationARB(GLhandleARB programObj, const GLcharARB *name)
if (index == GL_INVALID_INDEX)
return -1;
+ /* From the GL_ARB_uniform_buffer_object spec:
+ *
+ * "The value -1 will be returned if <name> does not correspond to an
+ * active uniform variable name in <program>, if <name> is associated
+ * with a named uniform block, or if <name> starts with the reserved
+ * prefix "gl_"."
+ */
+ if (shProg->UniformStorage[index].block_index != -1)
+ return -1;
+
return _mesa_uniform_merge_location_offset(index, offset);
}
@@ -583,6 +594,212 @@ _mesa_GetUniformIndices(GLuint program,
}
}
+static void GLAPIENTRY
+_mesa_UniformBlockBinding(GLuint program,
+ GLuint uniformBlockIndex,
+ GLuint uniformBlockBinding)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_shader_program *shProg;
+
+ if (!ctx->Extensions.ARB_uniform_buffer_object) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glUniformBlockBinding");
+ return;
+ }
+
+ shProg = _mesa_lookup_shader_program_err(ctx, program,
+ "glUniformBlockBinding");
+ if (!shProg)
+ return;
+
+ if (uniformBlockIndex >= shProg->NumUniformBlocks) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glUniformBlockBinding(block index %d >= %d)",
+ uniformBlockIndex, shProg->NumUniformBlocks);
+ return;
+ }
+
+ if (uniformBlockBinding >= ctx->Const.MaxUniformBufferBindings) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glUniformBlockBinding(block binding %d >= %d)",
+ uniformBlockBinding, ctx->Const.MaxUniformBufferBindings);
+ return;
+ }
+
+ if (shProg->UniformBlocks[uniformBlockIndex].Binding !=
+ uniformBlockBinding) {
+ int i;
+
+ FLUSH_VERTICES(ctx, _NEW_BUFFER_OBJECT);
+ shProg->UniformBlocks[uniformBlockIndex].Binding = uniformBlockBinding;
+
+ for (i = 0; i < MESA_SHADER_TYPES; i++) {
+ int stage_index = shProg->UniformBlockStageIndex[i][uniformBlockIndex];
+
+ if (stage_index != -1) {
+ struct gl_shader *sh = shProg->_LinkedShaders[i];
+ sh->UniformBlocks[stage_index].Binding = uniformBlockBinding;
+ }
+ }
+ }
+}
+
+static void GLAPIENTRY
+_mesa_GetActiveUniformBlockiv(GLuint program,
+ GLuint uniformBlockIndex,
+ GLenum pname,
+ GLint *params)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_shader_program *shProg;
+ struct gl_uniform_block *block;
+ unsigned i;
+
+ if (!ctx->Extensions.ARB_uniform_buffer_object) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetActiveUniformBlockiv");
+ return;
+ }
+
+ shProg = _mesa_lookup_shader_program_err(ctx, program,
+ "glGetActiveUniformBlockiv");
+ if (!shProg)
+ return;
+
+ if (uniformBlockIndex >= shProg->NumUniformBlocks) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glGetActiveUniformBlockiv(block index %d >= %d)",
+ uniformBlockIndex, shProg->NumUniformBlocks);
+ return;
+ }
+
+ block = &shProg->UniformBlocks[uniformBlockIndex];
+
+ switch (pname) {
+ case GL_UNIFORM_BLOCK_BINDING:
+ params[0] = block->Binding;
+ return;
+
+ case GL_UNIFORM_BLOCK_DATA_SIZE:
+ params[0] = block->UniformBufferSize;
+ return;
+
+ case GL_UNIFORM_BLOCK_NAME_LENGTH:
+ params[0] = strlen(block->Name) + 1;
+ return;
+
+ case GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS:
+ params[0] = block->NumUniforms;
+ return;
+
+ case GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES:
+ for (i = 0; i < block->NumUniforms; i++) {
+ unsigned offset;
+ params[i] = _mesa_get_uniform_location(ctx, shProg,
+ block->Uniforms[i].Name,
+ &offset);
+ }
+ return;
+
+ case GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER:
+ params[0] = shProg->UniformBlockStageIndex[MESA_SHADER_VERTEX][uniformBlockIndex] != -1;
+ return;
+
+ case GL_UNIFORM_BLOCK_REFERENCED_BY_GEOMETRY_SHADER:
+ params[0] = shProg->UniformBlockStageIndex[MESA_SHADER_GEOMETRY][uniformBlockIndex] != -1;
+ return;
+
+ case GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER:
+ params[0] = shProg->UniformBlockStageIndex[MESA_SHADER_FRAGMENT][uniformBlockIndex] != -1;
+ return;
+
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetActiveUniformBlockiv(pname 0x%x (%s))",
+ pname, _mesa_lookup_enum_by_nr(pname));
+ return;
+ }
+}
+
+static void GLAPIENTRY
+_mesa_GetActiveUniformBlockName(GLuint program,
+ GLuint uniformBlockIndex,
+ GLsizei bufSize,
+ GLsizei *length,
+ GLchar *uniformBlockName)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_shader_program *shProg;
+ struct gl_uniform_block *block;
+
+ if (!ctx->Extensions.ARB_uniform_buffer_object) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetActiveUniformBlockiv");
+ return;
+ }
+
+ if (bufSize < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glGetActiveUniformBlockName(bufSize %d < 0)",
+ bufSize);
+ return;
+ }
+
+ shProg = _mesa_lookup_shader_program_err(ctx, program,
+ "glGetActiveUniformBlockiv");
+ if (!shProg)
+ return;
+
+ if (uniformBlockIndex >= shProg->NumUniformBlocks) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glGetActiveUniformBlockiv(block index %d >= %d)",
+ uniformBlockIndex, shProg->NumUniformBlocks);
+ return;
+ }
+
+ block = &shProg->UniformBlocks[uniformBlockIndex];
+
+ if (uniformBlockName) {
+ _mesa_copy_string(uniformBlockName, bufSize, length, block->Name);
+ }
+}
+
+static void GLAPIENTRY
+_mesa_GetActiveUniformName(GLuint program, GLuint uniformIndex,
+ GLsizei bufSize, GLsizei *length,
+ GLchar *uniformName)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_shader_program *shProg;
+
+ if (!ctx->Extensions.ARB_uniform_buffer_object) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetActiveUniformBlockiv");
+ return;
+ }
+
+ if (bufSize < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glGetActiveUniformName(bufSize %d < 0)",
+ bufSize);
+ return;
+ }
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ shProg = _mesa_lookup_shader_program_err(ctx, program, "glGetActiveUniformName");
+
+ if (!shProg)
+ return;
+
+ if (uniformIndex >= shProg->NumUserUniformStorage) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glGetActiveUniform(index)");
+ return;
+ }
+
+ if (uniformName) {
+ _mesa_copy_string(uniformName, bufSize, length,
+ shProg->UniformStorage[uniformIndex].name);
+ }
+}
+
/**
* Plug in shader uniform-related functions into API dispatch table.
*/
@@ -644,6 +861,10 @@ _mesa_init_shader_uniform_dispatch(struct _glapi_table *exec)
SET_GetUniformBlockIndex(exec, _mesa_GetUniformBlockIndex);
SET_GetUniformIndices(exec, _mesa_GetUniformIndices);
SET_GetActiveUniformsiv(exec, _mesa_GetActiveUniformsiv);
+ SET_GetActiveUniformBlockiv(exec, _mesa_GetActiveUniformBlockiv);
+ SET_GetActiveUniformBlockName(exec, _mesa_GetActiveUniformBlockName);
+ SET_GetActiveUniformName(exec, _mesa_GetActiveUniformName);
+ SET_UniformBlockBinding(exec, _mesa_UniformBlockBinding);
#endif /* FEATURE_GL */
}