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gallium: if VERBOSE_GLSL flag is set, check for non-initialized uniforms at draw time

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This will warn the user that the shader being run may be using uninitialized
uniform variables.
This commit is contained in:
Brian Paul 2008-11-05 14:05:04 -07:00
parent 0331c1c169
commit 6282c38283
1 changed files with 27 additions and 0 deletions
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27
src/mesa/state_tracker/st_draw.c
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@ -33,6 +33,7 @@
#include "main/imports.h"
#include "main/image.h"
#include "main/macros.h"
#include "shader/prog_uniform.h"
#include "vbo/vbo.h"
@ -483,6 +484,28 @@ setup_non_interleaved_attribs(GLcontext *ctx,
/**
* Prior to drawing, check that any uniforms referenced by the
* current shader have been set. If a uniform has not been set,
* issue a warning.
*/
static void
check_uniforms(GLcontext *ctx)
{
const struct gl_shader_program *shProg = ctx->Shader.CurrentProgram;
if (shProg && shProg->LinkStatus) {
GLuint i;
for (i = 0; i < shProg->Uniforms->NumUniforms; i++) {
const struct gl_uniform *u = &shProg->Uniforms->Uniforms[i];
if (!u->Initialized) {
_mesa_warning(ctx,
"Using shader with uninitialized uniform: %s",
u->Name);
}
}
}
}
/**
* This function gets plugged into the VBO module and is called when
@ -516,6 +539,10 @@ st_draw_vbo(GLcontext *ctx,
vp = ctx->st->vp;
vs = &ctx->st->vp->state;
if (MESA_VERBOSE & VERBOSE_GLSL) {
check_uniforms(ctx);
}
/*
* Setup the vbuffer[] and velements[] arrays.
*/