From ff2a0faba068ac8bc891f4a6427ad3e241c5f09f Mon Sep 17 00:00:00 2001
From: Zack Rusin <zack@kde.org>
Date: Tue, 1 Mar 2011 22:50:42 -0500
Subject: [PATCH] tgsi: defer allocation of huge inputs/outputs until we have a
 gs

---
 src/gallium/auxiliary/tgsi/tgsi_exec.c | 45 +++++++++++++++++++++++---
 src/gallium/auxiliary/tgsi/tgsi_exec.h |  6 ++--
 2 files changed, 45 insertions(+), 6 deletions(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index cbb090b2803..6576c74fbde 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -672,6 +672,31 @@ tgsi_exec_machine_bind_shader(
    mach->Processor = parse.FullHeader.Processor.Processor;
    mach->ImmLimit = 0;
 
+   if (mach->Processor == TGSI_PROCESSOR_GEOMETRY &&
+       !mach->UsedGeometryShader) {
+      struct tgsi_exec_vector *inputs =
+         align_malloc(sizeof(struct tgsi_exec_vector) *
+                      TGSI_MAX_PRIM_VERTICES * PIPE_MAX_ATTRIBS,
+                      16);
+      struct tgsi_exec_vector *outputs =
+         align_malloc(sizeof(struct tgsi_exec_vector) *
+                      TGSI_MAX_TOTAL_VERTICES, 16);
+
+      if (!inputs)
+         return;
+      if (!outputs) {
+         align_free(inputs);
+         return;
+      }
+
+      align_free(mach->Inputs);
+      align_free(mach->Outputs);
+
+      mach->Inputs = inputs;
+      mach->Outputs = outputs;
+      mach->UsedGeometryShader = TRUE;
+   }
+
    declarations = (struct tgsi_full_declaration *)
       MALLOC( maxDeclarations * sizeof(struct tgsi_full_declaration) );
 
@@ -801,6 +826,11 @@ tgsi_exec_machine_create( void )
    mach->MaxGeometryShaderOutputs = TGSI_MAX_TOTAL_VERTICES;
    mach->Predicates = &mach->Temps[TGSI_EXEC_TEMP_P0];
 
+   mach->Inputs = align_malloc(sizeof(struct tgsi_exec_vector) * PIPE_MAX_ATTRIBS, 16);
+   mach->Outputs = align_malloc(sizeof(struct tgsi_exec_vector) * PIPE_MAX_ATTRIBS, 16);
+   if (!mach->Inputs || !mach->Outputs)
+      goto fail;
+
    /* Setup constants needed by the SSE2 executor. */
    for( i = 0; i < 4; i++ ) {
       mach->Temps[TGSI_EXEC_TEMP_00000000_I].xyzw[TGSI_EXEC_TEMP_00000000_C].u[i] = 0x00000000;
@@ -824,7 +854,11 @@ tgsi_exec_machine_create( void )
    return mach;
 
 fail:
-   align_free(mach);
+   if (mach) {
+      align_free(mach->Inputs);
+      align_free(mach->Outputs);
+      align_free(mach);
+   }
    return NULL;
 }
 
@@ -836,10 +870,13 @@ tgsi_exec_machine_destroy(struct tgsi_exec_machine *mach)
       if (mach->Instructions)
          FREE(mach->Instructions);
       if (mach->Declarations)
-      FREE(mach->Declarations);
-   }
+         FREE(mach->Declarations);
+
+      align_free(mach->Inputs);
+      align_free(mach->Outputs);
 
-   align_free(mach);
+      align_free(mach);
+   }
 }
 
 static void
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.h b/src/gallium/auxiliary/tgsi/tgsi_exec.h
index 4a423b5bb4e..33f33aa82c7 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.h
@@ -228,8 +228,8 @@ struct tgsi_exec_machine
 
    float                         ImmArray[TGSI_EXEC_NUM_IMMEDIATES][4];
 
-   struct tgsi_exec_vector       Inputs[TGSI_MAX_PRIM_VERTICES * PIPE_MAX_ATTRIBS];
-   struct tgsi_exec_vector       Outputs[TGSI_MAX_TOTAL_VERTICES];
+   struct tgsi_exec_vector       *Inputs;
+   struct tgsi_exec_vector       *Outputs;
 
    /* System values */
    unsigned                      SysSemanticToIndex[TGSI_SEMANTIC_COUNT];
@@ -309,6 +309,8 @@ struct tgsi_exec_machine
    uint NumDeclarations;
 
    struct tgsi_declaration_resource Resources[PIPE_MAX_SHADER_RESOURCES];
+
+   boolean UsedGeometryShader;
 };
 
 struct tgsi_exec_machine *
-- 
2.30.2