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authorAndre Maasikas <amaasikas@gmail.com>2009-10-21 12:23:27 +0300
committerAndre Maasikas <amaasikas@gmail.com>2009-10-22 09:44:03 +0300
commita88c9296cb079ff42ef901113d0fe772228e6feb (patch)
tree9499cf6d0da0c8aba6094fc1bd22d17817698798 /src/mesa
parentb86302283b48654682e0580c53ece01bf095fa95 (diff)
r600: need to export something from PS
Also avoids empty shader for "END" - seems to be somewhat valid fp Maybe this can be done differently in the future (fake FRAG_RESULT_COLOR already in Map_Fragment_Program() or is there a way to program the chip to not hang in case of no exports.
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/drivers/dri/r600/r700_assembler.c11
-rw-r--r--src/mesa/drivers/dri/r600/r700_fragprog.c10
2 files changed, 19 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/r600/r700_assembler.c b/src/mesa/drivers/dri/r600/r700_assembler.c
index d0eb9949a6..6ff08e1cfb 100644
--- a/src/mesa/drivers/dri/r600/r700_assembler.c
+++ b/src/mesa/drivers/dri/r600/r700_assembler.c
@@ -4187,6 +4187,7 @@ GLboolean Process_Fragment_Exports(r700_AssemblerBase *pR700AsmCode,
GLbitfield OutputsWritten)
{
unsigned int unBit;
+ GLuint export_count = 0;
if(pR700AsmCode->depth_export_register_number >= 0)
{
@@ -4208,6 +4209,7 @@ GLboolean Process_Fragment_Exports(r700_AssemblerBase *pR700AsmCode,
{
return GL_FALSE;
}
+ export_count++;
}
unBit = 1 << FRAG_RESULT_DEPTH;
if(OutputsWritten & unBit)
@@ -4221,8 +4223,15 @@ GLboolean Process_Fragment_Exports(r700_AssemblerBase *pR700AsmCode,
{
return GL_FALSE;
}
+ export_count++;
}
-
+ /* Need to export something, otherwise we'll hang
+ * results are undefined anyway */
+ if(export_count == 0)
+ {
+ Process_Export(pR700AsmCode, SQ_EXPORT_PIXEL, 0, 1, 0, GL_FALSE);
+ }
+
if(pR700AsmCode->cf_last_export_ptr != NULL)
{
pR700AsmCode->cf_last_export_ptr->m_Word1.f.cf_inst = SQ_CF_INST_EXPORT_DONE;
diff --git a/src/mesa/drivers/dri/r600/r700_fragprog.c b/src/mesa/drivers/dri/r600/r700_fragprog.c
index 62a1ea1a22..3736bce11c 100644
--- a/src/mesa/drivers/dri/r600/r700_fragprog.c
+++ b/src/mesa/drivers/dri/r600/r700_fragprog.c
@@ -251,7 +251,15 @@ GLboolean r700TranslateFragmentShader(struct r700_fragment_program *fp,
number_of_colors_exported--;
}
- fp->r700Shader.exportMode = number_of_colors_exported << 1 | z_enabled;
+ /* illegal to set this to 0 */
+ if(number_of_colors_exported || z_enabled)
+ {
+ fp->r700Shader.exportMode = number_of_colors_exported << 1 | z_enabled;
+ }
+ else
+ {
+ fp->r700Shader.exportMode = (1 << 1);
+ }
fp->translated = GL_TRUE;