diff options
Diffstat (limited to 'mesalib/src/mesa/main/uniform_query.cpp')
| -rw-r--r-- | mesalib/src/mesa/main/uniform_query.cpp | 98 |
1 files changed, 88 insertions, 10 deletions
diff --git a/mesalib/src/mesa/main/uniform_query.cpp b/mesalib/src/mesa/main/uniform_query.cpp index f5d998ffb..816c2779c 100644 --- a/mesalib/src/mesa/main/uniform_query.cpp +++ b/mesalib/src/mesa/main/uniform_query.cpp @@ -74,6 +74,79 @@ _mesa_GetActiveUniformARB(GLhandleARB program, GLuint index, } } +extern "C" void GLAPIENTRY +_mesa_GetActiveUniformsiv(GLuint program, + GLsizei uniformCount, + const GLuint *uniformIndices, + GLenum pname, + GLint *params) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_shader_program *shProg; + GLsizei i; + + shProg = _mesa_lookup_shader_program_err(ctx, program, "glGetActiveUniform"); + if (!shProg) + return; + + if (uniformCount < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glGetUniformIndices(uniformCount < 0)"); + return; + } + + for (i = 0; i < uniformCount; i++) { + GLuint index = uniformIndices[i]; + const struct gl_uniform_storage *uni = &shProg->UniformStorage[index]; + + if (index >= shProg->NumUserUniformStorage) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGetActiveUniformsiv(index)"); + return; + } + + switch (pname) { + case GL_UNIFORM_TYPE: + params[i] = uni->type->gl_type; + break; + + case GL_UNIFORM_SIZE: + /* array_elements is zero for non-arrays, but the API requires that 1 be + * returned. + */ + params[i] = MAX2(1, uni->array_elements); + break; + + case GL_UNIFORM_NAME_LENGTH: + params[i] = strlen(uni->name) + 1; + break; + + case GL_UNIFORM_BLOCK_INDEX: + params[i] = uni->block_index; + break; + + case GL_UNIFORM_OFFSET: + params[i] = uni->offset; + break; + + case GL_UNIFORM_ARRAY_STRIDE: + params[i] = uni->array_stride; + break; + + case GL_UNIFORM_MATRIX_STRIDE: + params[i] = uni->matrix_stride; + break; + + case GL_UNIFORM_IS_ROW_MAJOR: + params[i] = uni->row_major; + break; + + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glGetActiveUniformsiv(pname)"); + return; + } + } +} + static bool validate_uniform_parameters(struct gl_context *ctx, struct gl_shader_program *shProg, @@ -852,13 +925,17 @@ _mesa_uniform_matrix(struct gl_context *ctx, struct gl_shader_program *shProg, /** * Called via glGetUniformLocation(). * - * The return value will encode two values, the uniform location and an - * offset (used for arrays, structs). + * Returns the uniform index into UniformStorage (also the + * glGetActiveUniformsiv uniform index), and stores the referenced + * array offset in *offset, or GL_INVALID_INDEX (-1). Those two + * return values can be encoded into a uniform location for + * glUniform* using _mesa_uniform_merge_location_offset(index, offset). */ -extern "C" GLint +extern "C" unsigned _mesa_get_uniform_location(struct gl_context *ctx, struct gl_shader_program *shProg, - const GLchar *name) + const GLchar *name, + unsigned *out_offset) { const size_t len = strlen(name); long offset; @@ -901,13 +978,13 @@ _mesa_get_uniform_location(struct gl_context *ctx, * (or other non-digit characters) before the opening '['. */ if ((i == 0) || name[i-1] != '[') - return -1; + return GL_INVALID_INDEX; /* Return an error if there are no digits between the opening '[' to * match the closing ']'. */ if (i == (len - 1)) - return -1; + return GL_INVALID_INDEX; /* Make a new string that is a copy of the old string up to (but not * including) the '[' character. @@ -919,7 +996,7 @@ _mesa_get_uniform_location(struct gl_context *ctx, offset = strtol(&name[i], NULL, 10); if (offset < 0) { free(name_copy); - return -1; + return GL_INVALID_INDEX; } array_lookup = true; @@ -941,16 +1018,17 @@ _mesa_get_uniform_location(struct gl_context *ctx, free(name_copy); if (!found) - return -1; + return GL_INVALID_INDEX; /* Since array_elements is 0 for non-arrays, this causes look-ups of 'a[0]' * to (correctly) fail if 'a' is not an array. */ if (array_lookup && shProg->UniformStorage[location].array_elements == 0) { - return -1; + return GL_INVALID_INDEX; } - return _mesa_uniform_merge_location_offset(location, offset); + *out_offset = offset; + return location; } extern "C" bool |