From: José Fonseca <jfons...@vmware.com>
- Use LLVM limits when LLVM is being used, instead of TGSI limits
- Provide draw_get_shader_param_no_llvm for when llvm is never used (softpipe)
- Eliminate several of the hacks around draw shader caps in several drivers
Unfortunately the hack for PIPE_MAX_VERTEX_SAMPLERS is still necessary.
---
src/gallium/auxiliary/draw/draw_context.c | 41 +++++++++++++++++
src/gallium/auxiliary/draw/draw_context.h | 16 +++----
src/gallium/auxiliary/gallivm/lp_bld_limits.h | 58 ++++++++++++++++++++++++-
src/gallium/drivers/i915/i915_screen.c | 2 -
src/gallium/drivers/llvmpipe/lp_screen.c | 6 +--
src/gallium/drivers/softpipe/sp_screen.c | 18 +++-----
6 files changed, 110 insertions(+), 31 deletions(-)
diff --git a/src/gallium/auxiliary/draw/draw_context.c
b/src/gallium/auxiliary/draw/draw_context.c
index 2eae204..9713db8 100644
--- a/src/gallium/auxiliary/draw/draw_context.c
+++ b/src/gallium/auxiliary/draw/draw_context.c
@@ -42,6 +42,7 @@
#if HAVE_LLVM
#include "gallivm/lp_bld_init.h"
+#include "gallivm/lp_bld_limits.h"
#include "draw_llvm.h"
static boolean
@@ -830,3 +831,43 @@ draw_set_mapped_texture(struct draw_context *draw,
row_stride, img_stride, data);
#endif
}
+
+/**
+ * XXX: Results for PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS because there are two
+ * different ways of setting textures, and drivers typically only support one.
+ */
+int
+draw_get_shader_param_no_llvm(unsigned shader, enum pipe_shader_cap param)
+{
+ switch(shader) {
+ case PIPE_SHADER_VERTEX:
+ case PIPE_SHADER_GEOMETRY:
+ return tgsi_exec_get_shader_param(param);
+ default:
+ return 0;
+ }
+}
+
+/**
+ * XXX: Results for PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS because there are two
+ * different ways of setting textures, and drivers typically only support one.
+ */
+int
+draw_get_shader_param(unsigned shader, enum pipe_shader_cap param)
+{
+
+#ifdef HAVE_LLVM
+ if (draw_get_option_use_llvm()) {
+ switch(shader) {
+ case PIPE_SHADER_VERTEX:
+ case PIPE_SHADER_GEOMETRY:
+ return gallivm_get_shader_param(param);
+ default:
+ return 0;
+ }
+ }
+#endif
+
+ return draw_get_shader_param_no_llvm(shader, param);
+}
+
diff --git a/src/gallium/auxiliary/draw/draw_context.h
b/src/gallium/auxiliary/draw/draw_context.h
index 4cd0caf..852cbc3 100644
--- a/src/gallium/auxiliary/draw/draw_context.h
+++ b/src/gallium/auxiliary/draw/draw_context.h
@@ -277,16 +277,10 @@ boolean draw_need_pipeline(const struct draw_context
*draw,
const struct pipe_rasterizer_state *rasterizer,
unsigned prim );
-static INLINE int
-draw_get_shader_param(unsigned shader, enum pipe_shader_cap param)
-{
- switch(shader) {
- case PIPE_SHADER_VERTEX:
- case PIPE_SHADER_GEOMETRY:
- return tgsi_exec_get_shader_param(param);
- default:
- return 0;
- }
-}
+int
+draw_get_shader_param(unsigned shader, enum pipe_shader_cap param);
+
+int
+draw_get_shader_param_no_llvm(unsigned shader, enum pipe_shader_cap param);
#endif /* DRAW_CONTEXT_H */
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_limits.h
b/src/gallium/auxiliary/gallivm/lp_bld_limits.h
index 2dbb7ce..905070e 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_limits.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_limits.h
@@ -1,6 +1,6 @@
/**************************************************************************
*
- * Copyright 2010 VMware, Inc.
+ * Copyright 2010-2012 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
@@ -29,6 +29,13 @@
#ifndef LP_BLD_LIMITS_H_
#define LP_BLD_LIMITS_H_
+
+#include <limits.h>
+
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+
+
/*
* TGSI translation limits.
*
@@ -57,4 +64,53 @@
*/
#define LP_MAX_TGSI_LOOP_ITERATIONS 65535
+
+/**
+ * Some of these limits are actually infinite (i.e., only limited by available
+ * memory), however advertising INT_MAX would cause some test problems to
+ * actually try to allocate the maximum and run out of memory and crash. So
+ * stick with something reasonable here.
+ */
+static INLINE int
+gallivm_get_shader_param(enum pipe_shader_cap param)
+{
+ switch(param) {
+ case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
+ case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
+ case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
+ case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
+ return 1 * 1024 * 1024;
+ case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
+ return LP_MAX_TGSI_NESTING;
+ case PIPE_SHADER_CAP_MAX_INPUTS:
+ return PIPE_MAX_SHADER_INPUTS;
+ case PIPE_SHADER_CAP_MAX_CONSTS:
+ return 16 * 2024;
+ case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
+ return PIPE_MAX_CONSTANT_BUFFERS;
+ case PIPE_SHADER_CAP_MAX_TEMPS:
+ return LP_MAX_TGSI_TEMPS;
+ case PIPE_SHADER_CAP_MAX_ADDRS:
+ return LP_MAX_TGSI_ADDRS;
+ case PIPE_SHADER_CAP_MAX_PREDS:
+ return LP_MAX_TGSI_PREDS;
+ case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
+ return 1;
+ case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
+ case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
+ case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
+ case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
+ return 1;
+ case PIPE_SHADER_CAP_SUBROUTINES:
+ return 1;
+ case PIPE_SHADER_CAP_INTEGERS:
+ return 1;
+ case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
+ return PIPE_MAX_SAMPLERS;
+ default:
+ return 0;
+ }
+}
+
+
#endif /* LP_BLD_LIMITS_H_ */
diff --git a/src/gallium/drivers/i915/i915_screen.c
b/src/gallium/drivers/i915/i915_screen.c
index ff35203..d575bf7 100644
--- a/src/gallium/drivers/i915/i915_screen.c
+++ b/src/gallium/drivers/i915/i915_screen.c
@@ -110,8 +110,6 @@ i915_get_shader_param(struct pipe_screen *screen, unsigned
shader, enum pipe_sha
return PIPE_MAX_VERTEX_SAMPLERS;
else
return 0;
- case PIPE_SHADER_CAP_INTEGERS:
- return 1;
default:
return draw_get_shader_param(shader, cap);
}
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c
b/src/gallium/drivers/llvmpipe/lp_screen.c
index 33fa241..ecb66cf 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -221,10 +221,8 @@ llvmpipe_get_shader_param(struct pipe_screen *screen,
unsigned shader, enum pipe
{
case PIPE_SHADER_FRAGMENT:
switch (param) {
- case PIPE_SHADER_CAP_INTEGERS:
- return 0;
default:
- return tgsi_exec_get_shader_param(param);
+ return gallivm_get_shader_param(param);
}
case PIPE_SHADER_VERTEX:
case PIPE_SHADER_GEOMETRY:
@@ -238,8 +236,6 @@ llvmpipe_get_shader_param(struct pipe_screen *screen,
unsigned shader, enum pipe
return PIPE_MAX_VERTEX_SAMPLERS;
else
return 0;
- case PIPE_SHADER_CAP_INTEGERS:
- return 0;
default:
return draw_get_shader_param(shader, param);
}
diff --git a/src/gallium/drivers/softpipe/sp_screen.c
b/src/gallium/drivers/softpipe/sp_screen.c
index ade97a7..2439608 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -174,9 +174,7 @@ softpipe_get_param(struct pipe_screen *screen, enum
pipe_cap param)
static int
softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum
pipe_shader_cap param)
{
-#ifdef HAVE_LLVM
struct softpipe_screen *sp_screen = softpipe_screen(screen);
-#endif
switch(shader)
{
case PIPE_SHADER_FRAGMENT:
@@ -185,20 +183,16 @@ softpipe_get_shader_param(struct pipe_screen *screen,
unsigned shader, enum pipe
case PIPE_SHADER_GEOMETRY:
switch (param) {
case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
-#ifdef HAVE_LLVM
if (sp_screen->use_llvm)
/* Softpipe doesn't yet know how to tell draw/llvm about textures
*/
return 0;
-#endif
- return PIPE_MAX_VERTEX_SAMPLERS;
- case PIPE_SHADER_CAP_INTEGERS:
-#ifdef HAVE_LLVM /* gallivm doesn't support integers yet */
- if (sp_screen->use_llvm)
- return 0;
-#endif
- /* fallthrough */
+ else
+ return PIPE_MAX_VERTEX_SAMPLERS;
default:
- return draw_get_shader_param(shader, param);
+ if (sp_screen->use_llvm)
+ return draw_get_shader_param(shader, param);
+ else
+ return draw_get_shader_param_no_llvm(shader, param);
}
default:
return 0;
--
1.7.9.5
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