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don't save color/z if fragment is killed

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This commit is contained in:
Brian Paul 2006-10-22 22:58:42 +00:00
parent 73dd09fdd3
commit 49a5a09ada
1 changed files with 20 additions and 18 deletions
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38
src/mesa/swrast/s_nvfragprog.c
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@ -53,7 +53,7 @@ struct fp_machine
GLfloat Temporaries[MAX_NV_FRAGMENT_PROGRAM_TEMPS][4];
GLfloat Inputs[MAX_NV_FRAGMENT_PROGRAM_INPUTS][4];
GLfloat Outputs[MAX_NV_FRAGMENT_PROGRAM_OUTPUTS][4];
GLuint CondCodes[4];
GLuint CondCodes[4]; /**< COND_* value for x/y/z/w */
};
@ -1521,24 +1521,26 @@ run_program(GLcontext *ctx, SWspan *span, GLuint start, GLuint end)
if (span->array->mask[i]) {
init_machine(ctx, &machine, program, span, i);
if (!execute_program(ctx, program, ~0, &machine, span, i)) {
span->array->mask[i] = GL_FALSE; /* killed fragment */
span->writeAll = GL_FALSE;
if (execute_program(ctx, program, ~0, &machine, span, i)) {
/* Store result color */
COPY_4V(span->array->color.sz4.rgba[i],
machine.Outputs[FRAG_RESULT_COLR]);
/* Store result depth/z */
if (program->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR)) {
const GLfloat depth = machine.Outputs[FRAG_RESULT_DEPR][2];
if (depth <= 0.0)
span->array->z[i] = 0;
else if (depth >= 1.0)
span->array->z[i] = ctx->DrawBuffer->_DepthMax;
else
span->array->z[i] = IROUND(depth * ctx->DrawBuffer->_DepthMaxF);
}
}
/* Store result color */
COPY_4V(span->array->color.sz4.rgba[i],
machine.Outputs[FRAG_RESULT_COLR]);
/* Store result depth/z */
if (program->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR)) {
const GLfloat depth = machine.Outputs[FRAG_RESULT_DEPR][2];
if (depth <= 0.0)
span->array->z[i] = 0;
else if (depth >= 1.0)
span->array->z[i] = ctx->DrawBuffer->_DepthMax;
else
span->array->z[i] = IROUND(depth * ctx->DrawBuffer->_DepthMaxF);
else {
/* killed fragment */
span->array->mask[i] = GL_FALSE;
span->writeAll = GL_FALSE;
}
}
}