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texenvprogram: fix for ARB_draw_buffers. 

piglit has a test called fbo-drawbuffers, this fails for me on r300g,
and fixing the texenv program to use the DATA outputs fixes it.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2010-04-03 13:34:29 +10:00
parent 582e292a88
commit 4b39a0da89
1 changed files with 28 additions and 15 deletions
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43
src/mesa/main/texenvprogram.c
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@ -1415,6 +1415,7 @@ create_new_program(GLcontext *ctx, struct state_key *key,
struct texenv_fragment_program p;
GLuint unit;
struct ureg cf, out;
int i;
memset(&p, 0, sizeof(p));
p.state = key;
@ -1436,7 +1437,13 @@ create_new_program(GLcontext *ctx, struct state_key *key,
p.program->Base.NumAddressRegs = 0;
p.program->Base.Parameters = _mesa_new_parameter_list();
p.program->Base.InputsRead = 0x0;
p.program->Base.OutputsWritten = 1 << FRAG_RESULT_COLOR;
if (ctx->DrawBuffer->_NumColorDrawBuffers == 1)
p.program->Base.OutputsWritten = 1 << FRAG_RESULT_COLOR;
else {
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++)
p.program->Base.OutputsWritten |= (1 << (FRAG_RESULT_DATA0 + i));
}
for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
p.src_texture[unit] = undef;
@ -1485,22 +1492,28 @@ create_new_program(GLcontext *ctx, struct state_key *key,
}
cf = get_source( &p, SRC_PREVIOUS, 0 );
out = make_ureg( PROGRAM_OUTPUT, FRAG_RESULT_COLOR );
if (key->separate_specular) {
/* Emit specular add.
*/
struct ureg s = register_input(&p, FRAG_ATTRIB_COL1);
emit_arith( &p, OPCODE_ADD, out, WRITEMASK_XYZ, 0, cf, s, undef );
emit_arith( &p, OPCODE_MOV, out, WRITEMASK_W, 0, cf, undef, undef );
}
else if (memcmp(&cf, &out, sizeof(cf)) != 0) {
/* Will wind up in here if no texture enabled or a couple of
* other scenarios (GL_REPLACE for instance).
*/
emit_arith( &p, OPCODE_MOV, out, WRITEMASK_XYZW, 0, cf, undef, undef );
}
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
if (ctx->DrawBuffer->_NumColorDrawBuffers == 1)
out = make_ureg( PROGRAM_OUTPUT, FRAG_RESULT_COLOR );
else {
out = make_ureg( PROGRAM_OUTPUT, FRAG_RESULT_DATA0 + i );
}
if (key->separate_specular) {
/* Emit specular add.
*/
struct ureg s = register_input(&p, FRAG_ATTRIB_COL1);
emit_arith( &p, OPCODE_ADD, out, WRITEMASK_XYZ, 0, cf, s, undef );
emit_arith( &p, OPCODE_MOV, out, WRITEMASK_W, 0, cf, undef, undef );
}
else if (memcmp(&cf, &out, sizeof(cf)) != 0) {
/* Will wind up in here if no texture enabled or a couple of
* other scenarios (GL_REPLACE for instance).
*/
emit_arith( &p, OPCODE_MOV, out, WRITEMASK_XYZW, 0, cf, undef, undef );
}
}
/* Finish up:
*/
emit_arith( &p, OPCODE_END, undef, WRITEMASK_XYZW, 0, undef, undef, undef);