gallivm: More detailed analysis of tgsi shaders.

[mesa.git] / src / gallium / auxiliary / gallivm / lp_bld_tgsi.h

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi.h b/src/gallium/auxiliary/gallivm/lp_bld_tgsi.h
index eddb7a83fa29232930d4649ea8079d18447a5c8c..0173bc4a7fcc90e8c7fe5ba21e406457a747e976 100644 (file)
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi.h
@@ -35,15 +35,97 @@
 #ifndef LP_BLD_TGSI_H
 #define LP_BLD_TGSI_H
 
-#include <llvm-c/Core.h>
+#include "gallivm/lp_bld.h"
+#include "pipe/p_compiler.h"
+#include "pipe/p_state.h"
+#include "tgsi/tgsi_scan.h"
 
 
 struct tgsi_token;
+struct tgsi_shader_info;
 struct lp_type;
 struct lp_build_context;
 struct lp_build_mask_context;
 
 
+enum lp_build_tex_modifier {
+   LP_BLD_TEX_MODIFIER_NONE = 0,
+   LP_BLD_TEX_MODIFIER_PROJECTED,
+   LP_BLD_TEX_MODIFIER_LOD_BIAS,
+   LP_BLD_TEX_MODIFIER_EXPLICIT_LOD,
+   LP_BLD_TEX_MODIFIER_EXPLICIT_DERIV
+};
+
+
+/**
+ * Describe a channel of a register.
+ *
+ * The value can be a:
+ * - immediate value (i.e. derived from a IMM register)
+ * - CONST[n].x/y/z/w
+ * - IN[n].x/y/z/w
+ * - undetermined (when .file == TGSI_FILE_NULL)
+ *
+ * This is one of the analysis results, and is used to described
+ * the output color in terms of inputs.
+ */
+struct lp_tgsi_channel_info
+{
+   unsigned file:4; /* TGSI_FILE_* */
+   unsigned swizzle:3; /* PIPE_SWIZZLE_x */
+   union {
+      uint32_t index;
+      float value; /* for TGSI_FILE_IMMEDIATE */
+   };
+};
+
+
+/**
+ * Describe a texture sampler interpolator.
+ *
+ * The interpolation is described in terms of regular inputs.
+ */
+struct lp_tgsi_texture_info
+{
+   struct lp_tgsi_channel_info coord[4];
+   unsigned target:8; /* TGSI_TEXTURE_* */
+   unsigned unit:8;  /* Sampler unit */
+   unsigned modifier:8; /* LP_BLD_TEX_MODIFIER_* */
+};
+
+
+struct lp_tgsi_info
+{
+   struct tgsi_shader_info base;
+
+   /*
+    * Whether any of the texture opcodes access a register file other than
+    * TGSI_FILE_INPUT.
+    *
+    * We could also handle TGSI_FILE_CONST/IMMEDIATE here, but there is little
+    * benefit.
+    */
+   unsigned indirect_textures:1;
+
+   /*
+    * Texture opcode description. Aimed at detecting and described direct
+    * texture opcodes.
+    */
+   unsigned num_texs;
+   struct lp_tgsi_texture_info tex[PIPE_MAX_SAMPLERS];
+
+   /*
+    * Output description. Aimed at detecting and describing simple blit
+    * shaders.
+    */
+   struct lp_tgsi_channel_info output[PIPE_MAX_SHADER_OUTPUTS][4];
+
+   /*
+    * Shortcut pointers into the above (for fragment shaders).
+    */
+   const struct lp_tgsi_channel_info *cbuf[PIPE_MAX_COLOR_BUFS];
+};
+
 /**
  * Sampler code generation interface.
  *
@@ -58,17 +140,39 @@ struct lp_build_sampler_soa
    (*destroy)( struct lp_build_sampler_soa *sampler );
 
    void
-   (*emit_fetch_texel)( struct lp_build_sampler_soa *sampler,
+   (*emit_fetch_texel)( const struct lp_build_sampler_soa *sampler,
                         LLVMBuilderRef builder,
                         struct lp_type type,
                         unsigned unit,
                         unsigned num_coords,
                         const LLVMValueRef *coords,
-                        LLVMValueRef lodbias,
+                        const LLVMValueRef *ddx,
+                        const LLVMValueRef *ddy,
+                        LLVMValueRef lod_bias, /* optional */
+                        LLVMValueRef explicit_lod, /* optional */
                         LLVMValueRef *texel);
 };
 
 
+struct lp_build_sampler_aos
+{
+   LLVMValueRef
+   (*emit_fetch_texel)( struct lp_build_sampler_aos *sampler,
+                        struct lp_build_context *bld,
+                        unsigned target, /* TGSI_TEXTURE_* */
+                        unsigned unit,
+                        LLVMValueRef coords,
+                        LLVMValueRef ddx,
+                        LLVMValueRef ddy,
+                        enum lp_build_tex_modifier modifier);
+};
+
+
+void
+lp_build_tgsi_info(const struct tgsi_token *tokens,
+                   struct lp_tgsi_info *info);
+
+
 void
 lp_build_tgsi_soa(LLVMBuilderRef builder,
                   const struct tgsi_token *tokens,
@@ -78,7 +182,20 @@ lp_build_tgsi_soa(LLVMBuilderRef builder,
                   const LLVMValueRef *pos,
                   const LLVMValueRef (*inputs)[4],
                   LLVMValueRef (*outputs)[4],
-                  struct lp_build_sampler_soa *sampler);
+                  struct lp_build_sampler_soa *sampler,
+                  const struct tgsi_shader_info *info);
+
+
+void
+lp_build_tgsi_aos(LLVMBuilderRef builder,
+                  const struct tgsi_token *tokens,
+                  struct lp_type type,
+                  const unsigned char swizzles[4],
+                  LLVMValueRef consts_ptr,
+                  const LLVMValueRef *inputs,
+                  LLVMValueRef *outputs,
+                  struct lp_build_sampler_aos *sampler,
+                  const struct tgsi_shader_info *info);
 
 
 #endif /* LP_BLD_TGSI_H */