From ba69c4a0025e73ec2997795ddb4c3d6a210bfe32 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Fri, 7 Oct 2011 08:22:35 -0600
Subject: [PATCH] swrast: remove unused swrast_texture_image::FetchTexelc
 method

We only use the float-valued function now.
---
 src/mesa/swrast/s_context.h  |  9 +-----
 src/mesa/swrast/s_texfetch.c | 62 +-----------------------------------
 2 files changed, 2 insertions(+), 69 deletions(-)

diff --git a/src/mesa/swrast/s_context.h b/src/mesa/swrast/s_context.h
index 12ad688b06c..d7ad764a9e2 100644
--- a/src/mesa/swrast/s_context.h
+++ b/src/mesa/swrast/s_context.h
@@ -112,14 +112,8 @@ typedef void (*validate_texture_image_func)(struct gl_context *ctx,
 struct swrast_texture_image;
 
 
-typedef void (*FetchTexelFuncC)(const struct swrast_texture_image *texImage,
-                                GLint col, GLint row, GLint img,
-                                GLchan *texelOut);
-
 /**
- * As above, but returns floats.
- * Used for depth component images and for upcoming signed/float
- * texture images.
+ * Fetch a texel from texture image at given position.
  */
 typedef void (*FetchTexelFuncF)(const struct swrast_texture_image *texImage,
                                 GLint col, GLint row, GLint img,
@@ -150,7 +144,6 @@ struct swrast_texture_image
    GLint TexelSize;  /**< bytes per texel block */
 #endif
 
-   FetchTexelFuncC FetchTexelc;
    FetchTexelFuncF FetchTexelf;
    StoreTexelFunc Store;
 
diff --git a/src/mesa/swrast/s_texfetch.c b/src/mesa/swrast/s_texfetch.c
index 7573abda6dd..4bacf218b0b 100644
--- a/src/mesa/swrast/s_texfetch.c
+++ b/src/mesa/swrast/s_texfetch.c
@@ -1287,63 +1287,7 @@ _mesa_get_texel_store_func(gl_format format)
 
 
 /**
- * Adaptor for fetching a GLchan texel from a float-valued texture.
- */
-static void
-fetch_texel_float_to_chan(const struct swrast_texture_image *texImage,
-                          GLint i, GLint j, GLint k, GLchan *texelOut)
-{
-   GLfloat temp[4];
-   GLenum baseFormat = _mesa_get_format_base_format(texImage->Base.TexFormat);
-
-   ASSERT(texImage->FetchTexelf);
-   texImage->FetchTexelf(texImage, i, j, k, temp);
-   if (baseFormat == GL_DEPTH_COMPONENT ||
-       baseFormat == GL_DEPTH_STENCIL_EXT) {
-      /* just one channel */
-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);
-   }
-   else {
-      /* four channels */
-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);
-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[1], temp[1]);
-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[2], temp[2]);
-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[3], temp[3]);
-   }
-}
-
-
-#if 0
-/**
- * Adaptor for fetching a float texel from a GLchan-valued texture.
- */
-static void
-fetch_texel_chan_to_float(const struct swrast_texture_image *texImage,
-                          GLint i, GLint j, GLint k, GLfloat *texelOut)
-{
-   GLchan temp[4];
-   GLenum baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
-
-   ASSERT(texImage->FetchTexelc);
-   texImage->FetchTexelc(texImage, i, j, k, temp);
-   if (baseFormat == GL_DEPTH_COMPONENT ||
-       baseFormat == GL_DEPTH_STENCIL_EXT) {
-      /* just one channel */
-      texelOut[0] = CHAN_TO_FLOAT(temp[0]);
-   }
-   else {
-      /* four channels */
-      texelOut[0] = CHAN_TO_FLOAT(temp[0]);
-      texelOut[1] = CHAN_TO_FLOAT(temp[1]);
-      texelOut[2] = CHAN_TO_FLOAT(temp[2]);
-      texelOut[3] = CHAN_TO_FLOAT(temp[3]);
-   }
-}
-#endif
-
-
-/**
- * Initialize the texture image's FetchTexelc and FetchTexelf methods.
+ * Initialize the texture image's FetchTexelf methods.
  */
 static void
 set_fetch_functions(struct swrast_texture_image *texImage, GLuint dims)
@@ -1358,10 +1302,6 @@ set_fetch_functions(struct swrast_texture_image *texImage, GLuint dims)
    }
 
    texImage->FetchTexelf = _mesa_get_texel_fetch_func(format, dims);
-
-   texImage->FetchTexelc = fetch_texel_float_to_chan;
-
-   ASSERT(texImage->FetchTexelc);
    ASSERT(texImage->FetchTexelf);
 }
 
-- 
2.30.2