llvmpipe: Pass fragment context to generated function in a single structure.

1 files changed, 37 insertions, 1 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_jit.c b/src/gallium/drivers/llvmpipe/lp_jit.c
index c3ba03a5a1..92d5d43d0c 100644
--- a/src/gallium/drivers/llvmpipe/lp_jit.c
+++ b/src/gallium/drivers/llvmpipe/lp_jit.c
@@ -35,10 +35,42 @@
 
 #include <llvm-c/Transforms/Scalar.h>
 
+#include "util/u_memory.h"
 #include "lp_screen.h"
 #include "lp_jit.h"
 
 
+static void
+lp_jit_init_types(struct llvmpipe_screen *screen)
+{
+   /* struct lp_jit_context */
+   {
+      LLVMTypeRef elem_types[2];
+      LLVMTypeRef context_type;
+
+      elem_types[0] = LLVMPointerType(LLVMFloatType(), 0); /* constants */
+      elem_types[1] = LLVMPointerType(LLVMInt8Type(), 0);  /* samplers */
+
+      context_type = LLVMStructType(elem_types, Elements(elem_types), 0);
+
+      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, constants,
+                             screen->target, context_type, 0);
+      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, samplers,
+                             screen->target, context_type, 1);
+      LP_CHECK_STRUCT_SIZE(struct lp_jit_context,
+                           screen->target, context_type);
+
+      LLVMAddTypeName(screen->module, "context", context_type);
+
+      screen->context_ptr_type = LLVMPointerType(context_type, 0);
+   }
+
+#ifdef DEBUG
+   LLVMDumpModule(screen->module);
+#endif
+}
+
+
 void
 lp_jit_screen_cleanup(struct llvmpipe_screen *screen)
 {
@@ -65,8 +97,10 @@ lp_jit_screen_init(struct llvmpipe_screen *screen)
       abort();
    }
 
+   screen->target = LLVMGetExecutionEngineTargetData(screen->engine);
+
    screen->pass = LLVMCreateFunctionPassManager(screen->provider);
-   LLVMAddTargetData(LLVMGetExecutionEngineTargetData(screen->engine), screen->pass);
+   LLVMAddTargetData(screen->target, screen->pass);
    /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
     * but there are more on SVN. */
    LLVMAddConstantPropagationPass(screen->pass);
@@ -74,4 +108,6 @@ lp_jit_screen_init(struct llvmpipe_screen *screen)
    LLVMAddPromoteMemoryToRegisterPass(screen->pass);
    LLVMAddGVNPass(screen->pass);
    LLVMAddCFGSimplificationPass(screen->pass);
+
+   lp_jit_init_types(screen);
 }