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glsl: avoid redundant state changes in _mesa_use_program()

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This commit is contained in:
Brian Paul 2009-10-27 20:09:33 -06:00
parent 2947d14202
commit b44304efde
1 changed files with 4 additions and 3 deletions
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7
src/mesa/shader/shader_api.c
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@ -1547,8 +1547,6 @@ _mesa_use_program(GLcontext *ctx, GLuint program)
return;
}
FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
if (program) {
shProg = _mesa_lookup_shader_program_err(ctx, program, "glUseProgram");
if (!shProg) {
@ -1569,7 +1567,10 @@ _mesa_use_program(GLcontext *ctx, GLuint program)
shProg = NULL;
}
_mesa_reference_shader_program(ctx, &ctx->Shader.CurrentProgram, shProg);
if (ctx->Shader.CurrentProgram != shProg) {
FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
_mesa_reference_shader_program(ctx, &ctx->Shader.CurrentProgram, shProg);
}
}