diff options
Diffstat (limited to 'src/mesa/shader/shader_api.c')
-rw-r--r-- | src/mesa/shader/shader_api.c | 50 |
1 files changed, 46 insertions, 4 deletions
diff --git a/src/mesa/shader/shader_api.c b/src/mesa/shader/shader_api.c index 3e28d92fe1..c1fbcde61e 100644 --- a/src/mesa/shader/shader_api.c +++ b/src/mesa/shader/shader_api.c @@ -955,12 +955,15 @@ _mesa_get_shader_source(GLcontext *ctx, GLuint shader, GLsizei maxLength, } +#define MAX_UNIFORM_ELEMENTS 16 + /** - * Called via ctx->Driver.GetUniformfv(). + * Helper for GetUniformfv(), GetUniformiv() + * Returns number of elements written to 'params' output. */ -static void -_mesa_get_uniformfv(GLcontext *ctx, GLuint program, GLint location, - GLfloat *params) +static GLuint +get_uniformfv(GLcontext *ctx, GLuint program, GLint location, + GLfloat *params) { struct gl_shader_program *shProg = _mesa_lookup_shader_program(ctx, program); @@ -984,9 +987,13 @@ _mesa_get_uniformfv(GLcontext *ctx, GLuint program, GLint location, ASSERT(prog); if (prog) { + /* See uniformiv() below */ + assert(prog->Parameters->Parameters[progPos].Size <= MAX_UNIFORM_ELEMENTS); + for (i = 0; i < prog->Parameters->Parameters[progPos].Size; i++) { params[i] = prog->Parameters->ParameterValues[progPos][i]; } + return prog->Parameters->Parameters[progPos].Size; } } else { @@ -996,6 +1003,35 @@ _mesa_get_uniformfv(GLcontext *ctx, GLuint program, GLint location, else { _mesa_error(ctx, GL_INVALID_OPERATION, "glGetUniformfv(program)"); } + return 0; +} + + +/** + * Called via ctx->Driver.GetUniformfv(). + */ +static void +_mesa_get_uniformfv(GLcontext *ctx, GLuint program, GLint location, + GLfloat *params) +{ + (void) get_uniformfv(ctx, program, location, params); +} + + +/** + * Called via ctx->Driver.GetUniformiv(). + */ +static void +_mesa_get_uniformiv(GLcontext *ctx, GLuint program, GLint location, + GLint *params) +{ + GLfloat fparams[MAX_UNIFORM_ELEMENTS]; + GLuint n = get_uniformfv(ctx, program, location, fparams); + GLuint i; + assert(n <= MAX_UNIFORM_ELEMENTS); + for (i = 0; i < n; i++) { + params[i] = (GLint) fparams[i]; + } } @@ -1011,6 +1047,11 @@ _mesa_get_uniform_location(GLcontext *ctx, GLuint program, const GLchar *name) if (!shProg) return -1; + if (shProg->LinkStatus == GL_FALSE) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetUniformfv(program)"); + return -1; + } + /* XXX we should return -1 if the uniform was declared, but not * actually used. */ @@ -1408,6 +1449,7 @@ _mesa_init_glsl_driver_functions(struct dd_function_table *driver) driver->GetShaderInfoLog = _mesa_get_shader_info_log; driver->GetShaderSource = _mesa_get_shader_source; driver->GetUniformfv = _mesa_get_uniformfv; + driver->GetUniformiv = _mesa_get_uniformiv; driver->GetUniformLocation = _mesa_get_uniform_location; driver->IsProgram = _mesa_is_program; driver->IsShader = _mesa_is_shader; |