mesa: move software texel fetch code into swrast

It's only used by swrast now so move it out of core Mesa.

src/mesa/SConscript

@@ -114,7 +114,6 @@ main_sources = [
     'main/texcompress_s3tc.c',
     'main/texcompress_fxt1.c',
     'main/texenv.c',
-    'main/texfetch.c',
     'main/texformat.c',
     'main/texgen.c',
     'main/texgetimage.c',
@@ -173,6 +172,7 @@ swrast_sources = [
     'swrast/s_span.c',
     'swrast/s_stencil.c',
     'swrast/s_texcombine.c',
+    'swrast/s_texfetch.c',
     'swrast/s_texfilter.c',
     'swrast/s_texrender.c',
     'swrast/s_texture.c',

src/mesa/drivers/dri/nouveau/nouveau_texture.c

@@ -37,9 +37,9 @@
 #include "main/texcompress.h"
 #include "main/texgetimage.h"
 #include "main/mipmap.h"
-#include "main/texfetch.h"
 #include "main/teximage.h"
 #include "drivers/common/meta.h"
+#include "swrast/s_texfetch.h"
 
 static struct gl_texture_object *
 nouveau_texture_new(struct gl_context *ctx, GLuint name, GLenum target)

src/mesa/main/texparam.c

@@ -43,7 +43,6 @@
 #include "main/texparam.h"
 #include "main/teximage.h"
 #include "main/texstate.h"
-#include "main/texfetch.h"
 #include "program/prog_instruction.h"
 
 

src/mesa/sources.mak

@@ -85,7 +85,6 @@ MAIN_SOURCES = \
 	main/texcompress_s3tc.c \
 	main/texcompress_fxt1.c \
 	main/texenv.c \
-	main/texfetch.c \
 	main/texformat.c \
 	main/texgen.c \
 	main/texgetimage.c \
@@ -144,6 +143,7 @@ SWRAST_SOURCES = \
 	swrast/s_span.c \
 	swrast/s_stencil.c \
 	swrast/s_texcombine.c \
+	swrast/s_texfetch.c \
 	swrast/s_texfilter.c \
 	swrast/s_texrender.c \
 	swrast/s_texture.c \

src/mesa/swrast/s_context.c

@@ -31,7 +31,6 @@
 #include "main/colormac.h"
 #include "main/mtypes.h"
 #include "main/teximage.h"
-#include "main/texfetch.h"
 #include "program/prog_parameter.h"
 #include "program/prog_statevars.h"
 #include "swrast.h"
@@ -40,6 +39,7 @@
 #include "s_lines.h"
 #include "s_points.h"
 #include "s_span.h"
+#include "s_texfetch.h"
 #include "s_triangle.h"
 #include "s_texfilter.h"
 

src/mesa/swrast/s_texfetch.c

@@ -25,7 +25,7 @@
 
 
 /**
- * \file texfetch.c
+ * \file s_texfetch.c
  *
  * Texel fetch/store functions
  *
@@ -33,14 +33,14 @@
  */
 
 
-#include "colormac.h"
-#include "macros.h"
-#include "texcompress.h"
-#include "texcompress_fxt1.h"
-#include "texcompress_s3tc.h"
-#include "texcompress_rgtc.h"
-#include "texfetch.h"
-#include "teximage.h"
+#include "main/colormac.h"
+#include "main/macros.h"
+#include "main/texcompress.h"
+#include "main/texcompress_fxt1.h"
+#include "main/texcompress_s3tc.h"
+#include "main/texcompress_rgtc.h"
+#include "main/teximage.h"
+#include "s_texfetch.h"
 #include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
 #include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
 
@@ -77,13 +77,13 @@ nonlinear_to_linear(GLubyte cs8)
 /* Texel fetch routines for all supported formats
  */
 #define DIM 1
-#include "texfetch_tmp.h"
+#include "s_texfetch_tmp.h"
 
 #define DIM 2
-#include "texfetch_tmp.h"
+#include "s_texfetch_tmp.h"
 
 #define DIM 3
-#include "texfetch_tmp.h"
+#include "s_texfetch_tmp.h"
 
 /**
  * Null texel fetch function.

src/mesa/swrast/s_texfetch.h

@@ -24,12 +24,10 @@
  */
 
 
-#ifndef TEXFETCH_H
-#define TEXFETCH_H
-
-#include "mtypes.h"
-#include "formats.h"
+#ifndef S_TEXFETCH_H
+#define S_TEXFETCH_H
 
+#include "swrast/s_context.h"
 
 extern StoreTexelFunc
 _mesa_get_texel_store_func(gl_format format);
@@ -42,4 +40,5 @@ _mesa_set_fetch_functions(struct gl_texture_image *texImage, GLuint dims);
 
 void
 _mesa_update_fetch_functions(struct gl_texture_object *texObj);
-#endif
+
+#endif /* S_TEXFETCH_H */

src/mesa/swrast/s_texrender.c

@@ -3,10 +3,10 @@
 #include "main/colormac.h"
 #include "main/fbobject.h"
 #include "main/macros.h"
-#include "main/texfetch.h"
 #include "main/teximage.h"
 #include "main/renderbuffer.h"
 #include "swrast/swrast.h"
+#include "swrast/s_texfetch.h"
 
 
 /*
@@ -543,7 +543,11 @@ update_wrapper(struct gl_context *ctx, struct gl_renderbuffer_attachment *att)
       trb->Store = store_nop;
    }
 
+   if (!trb->TexImage->FetchTexelf) {
+      _mesa_update_fetch_functions(trb->TexImage->TexObject);
+   }
    trb->Fetchf = trb->TexImage->FetchTexelf;
+   assert(trb->Fetchf);
 
    if (att->Texture->Target == GL_TEXTURE_1D_ARRAY_EXT) {
       trb->Yoffset = att->Zoffset;