r600: enable VERT_RESULT_PSIZ - makes point size & attenuation work

doc additions: shader export ARRAY_BASE for EXPORT_POS: 60 is position,
61 is misc vec(VS_OUT_MISC_VEC - used here),
62, 63 are clip distance vectors(VS_OUT_CCDIST#)

sorry for formating - there seem to be so many different styles in r600

2 files changed, 29 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/r600/r700_assembler.c b/src/mesa/drivers/dri/r600/r700_assembler.c
index 834bcc63e31..0677c54bea1 100644
--- a/src/mesa/drivers/dri/r600/r700_assembler.c
+++ b/src/mesa/drivers/dri/r600/r700_assembler.c
@@ -6511,13 +6511,30 @@ GLboolean Process_Vertex_Exports(r700_AssemblerBase *pR700AsmCode,
         {
             return GL_FALSE;
         }
+        export_starting_index++;
+        export_count--;
+        }
 
+    unBit = 1 << VERT_RESULT_PSIZ;
+    if(OutputsWritten & unBit)
+    {
+        if( GL_FALSE == Process_Export(pR700AsmCode,
+                                       SQ_EXPORT_POS,
+                                       export_starting_index,
+                                       1,
+                                       pR700AsmCode->ucVP_OutputMap[VERT_RESULT_PSIZ],
+                                       GL_FALSE) )
+        {
+            return GL_FALSE;
+        }
         export_count--;
+    }
+
+    pR700AsmCode->cf_last_export_ptr->m_Word1.f.cf_inst = SQ_CF_INST_EXPORT_DONE;
 
-        pR700AsmCode->cf_last_export_ptr->m_Word1.f.cf_inst = SQ_CF_INST_EXPORT_DONE;
-	}
 
     pR700AsmCode->number_of_exports = export_count;
+    export_starting_index = 0;
 
 	unBit = 1 << VERT_RESULT_COL0;
 	if(OutputsWritten & unBit)
diff --git a/src/mesa/drivers/dri/r600/r700_vertprog.c b/src/mesa/drivers/dri/r600/r700_vertprog.c
index 05c65164d60..14dd2a5482c 100644
--- a/src/mesa/drivers/dri/r600/r700_vertprog.c
+++ b/src/mesa/drivers/dri/r600/r700_vertprog.c
@@ -628,6 +628,16 @@ GLboolean r700SetupVertexProgram(GLcontext * ctx)
 
     R600_STATECHANGE(context, spi);
 
+    if(vp->mesa_program->Base.OutputsWritten & (1 << VERT_RESULT_PSIZ)) {
+        R600_STATECHANGE(context, cl);
+        SETbit(r700->PA_CL_VS_OUT_CNTL.u32All, USE_VTX_POINT_SIZE_bit);
+        SETbit(r700->PA_CL_VS_OUT_CNTL.u32All, VS_OUT_MISC_VEC_ENA_bit);
+    } else if (r700->PA_CL_VS_OUT_CNTL.u32All != 0) {
+        R600_STATECHANGE(context, cl);
+        CLEARbit(r700->PA_CL_VS_OUT_CNTL.u32All, USE_VTX_POINT_SIZE_bit);
+        CLEARbit(r700->PA_CL_VS_OUT_CNTL.u32All, VS_OUT_MISC_VEC_ENA_bit);
+    }
+
     SETfield(r700->SPI_VS_OUT_CONFIG.u32All,
 	     vp->r700Shader.nParamExports ? (vp->r700Shader.nParamExports - 1) : 0,
              VS_EXPORT_COUNT_shift, VS_EXPORT_COUNT_mask);