From: Gareth Hughes <gareth@valinux.com>
Date: Sun, 18 Mar 2001 13:31:52 +0000 (+0000)
Subject: Remove old code, fix a few comments.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6b406bf09dc18f4d84ccb636d043c990a30da4e1;p=mesa.git

Remove old code, fix a few comments.
---

diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
index d7b8024161f..57e653af216 100644
--- a/src/mesa/main/texformat.c
+++ b/src/mesa/main/texformat.c
@@ -1,4 +1,4 @@
-/* $Id: texformat.c,v 1.2 2001/03/18 08:53:49 gareth Exp $ */
+/* $Id: texformat.c,v 1.3 2001/03/18 13:31:52 gareth Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -420,11 +420,10 @@ const struct gl_texture_format _mesa_null_texformat = {
 
 
 
-/*
- * Given an internal texture format enum or 1, 2, 3, 4 return the
- * corresponding _base_ internal format:  GL_ALPHA, GL_LUMINANCE,
- * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA.
- * Return -1 if invalid enum.
+/* Given an internal texture format or 1, 2, 3, 4 initialize the texture
+ * image structure's default format and type information.  Drivers will
+ * initialize these fields accordingly if they override the default
+ * storage format.
  */
 void _mesa_init_tex_format( GLcontext *ctx, GLenum internalFormat,
 			    struct gl_texture_image *texImage )
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index 8fa9deb2218..9bccb207917 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -1,4 +1,4 @@
-/* $Id: texstore.c,v 1.12 2001/03/18 08:53:50 gareth Exp $ */
+/* $Id: texstore.c,v 1.13 2001/03/18 13:31:52 gareth Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -50,412 +50,14 @@
 #include "swrast/s_span.h"
 
 
-#if 0
-/*
- * Default 1-D texture texel fetch function.  This will typically be
- * overridden by hardware drivers which store their texture images in
- * special ways.
- */
-static void
-fetch_1d_texel(const struct gl_texture_image *img,
-               GLint i, GLint j, GLint k, GLvoid *texel)
-{
-   switch (img->Format) {
-   case GL_RGBA:
-      {
-         const GLchan *src = (GLchan *) img->Data + i * 4;
-         GLchan *rgba = (GLchan *) texel;
-         COPY_CHAN4(rgba, src);
-         return;
-      }
-   case GL_RGB:
-      {
-         const GLchan *src = (GLchan *) img->Data + i * 3;
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[1];
-         rgba[BCOMP] = src[2];
-         rgba[ACOMP] = CHAN_MAX;
-         return;
-      }
-   case GL_ALPHA:
-      {
-         const GLchan *src = (GLchan *) img->Data + i;
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = 0;
-         rgba[GCOMP] = 0;
-         rgba[BCOMP] = 0;
-         rgba[ACOMP] = src[0];
-         return;
-      }
-   case GL_LUMINANCE:
-      {
-         const GLchan *src = (GLchan *) img->Data + i;
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[0];
-         rgba[BCOMP] = src[0];
-         rgba[ACOMP] = CHAN_MAX;
-         return;
-      }
-   case GL_INTENSITY:
-      {
-         const GLchan *src = (GLchan *) img->Data + i;
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[0];
-         rgba[BCOMP] = src[0];
-         rgba[ACOMP] = src[0];
-         return;
-      }
-   case GL_LUMINANCE_ALPHA:
-      {
-         const GLchan *src = (GLchan *) img->Data + i * 2;
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[0];
-         rgba[BCOMP] = src[0];
-         rgba[ACOMP] = src[1];
-         return;
-      }
-   case GL_COLOR_INDEX:
-      {
-         const GLchan *src = (GLchan *) img->Data + i;
-         GLchan *index = (GLchan *) texel;
-         *index = *src;
-         return;
-      }
-   case GL_DEPTH_COMPONENT:
-      {
-         const GLfloat *src = (GLfloat *) img->Data + i;
-         GLfloat *depth = (GLfloat *) texel;
-         *depth = *src;
-         return;
-      }
-   default:
-      _mesa_problem(NULL, "Bad format in fetch_1d_texel");
-   }
-}
-
-
-/*
- * Default 2-D texture texel fetch function.
- */
-static void
-fetch_2d_texel(const struct gl_texture_image *img,
-               GLint i, GLint j, GLint k, GLvoid *texel)
-{
-   switch (img->Format) {
-   case GL_RGBA:
-      {
-         const GLchan *src = (GLchan *) img->Data + (img->Width * j + i) * 4;
-         GLchan *rgba = (GLchan *) texel;
-         COPY_CHAN4(rgba, src);
-         return;
-      }
-   case GL_RGB:
-      {
-         const GLchan *src = (GLchan *) img->Data + (img->Width * j + i) * 3;
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[1];
-         rgba[BCOMP] = src[2];
-         rgba[ACOMP] = CHAN_MAX;
-         return;
-      }
-   case GL_ALPHA:
-      {
-         const GLchan *src = (GLchan *) img->Data + (img->Width * j + i);
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = 0;
-         rgba[GCOMP] = 0;
-         rgba[BCOMP] = 0;
-         rgba[ACOMP] = src[0];
-         return;
-      }
-   case GL_LUMINANCE:
-      {
-         const GLchan *src = (GLchan *) img->Data + (img->Width * j + i);
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[0];
-         rgba[BCOMP] = src[0];
-         rgba[ACOMP] = CHAN_MAX;
-         return;
-      }
-   case GL_INTENSITY:
-      {
-         const GLchan *src = (GLchan *) img->Data + (img->Width * j + i);
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[0];
-         rgba[BCOMP] = src[0];
-         rgba[ACOMP] = src[0];
-         return;
-      }
-   case GL_LUMINANCE_ALPHA:
-      {
-         const GLchan *src = (GLchan *) img->Data + (img->Width * j + i) * 2;
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[0];
-         rgba[BCOMP] = src[0];
-         rgba[ACOMP] = src[1];
-         return;
-      }
-   case GL_COLOR_INDEX:
-      {
-         const GLchan *src = (GLchan *) img->Data + (img->Width * j + i);
-         GLchan *index = (GLchan *) texel;
-         *index = *src;
-         return;
-      }
-   case GL_DEPTH_COMPONENT:
-      {
-         const GLfloat *src = (GLfloat *) img->Data + (img->Width * j + i);
-         GLfloat *depth = (GLfloat *) texel;
-         *depth = *src;
-         return;
-      }
-   default:
-      _mesa_problem(NULL, "Bad format in fetch_2d_texel");
-   }
-}
-
-
-/*
- * Default 2-D texture texel fetch function.
- */
-static void
-fetch_3d_texel(const struct gl_texture_image *img,
-               GLint i, GLint j, GLint k, GLvoid *texel)
-{
-   const GLint width = img->Width;
-   const GLint rectArea = width * img->Height;
-
-   switch (img->Format) {
-   case GL_RGBA:
-      {
-         const GLchan *src = (GLchan *) img->Data
-                           + (rectArea * k + width * j + i) * 4;
-         GLchan *rgba = (GLchan *) texel;
-         COPY_CHAN4(rgba, src);
-         return;
-      }
-   case GL_RGB:
-      {
-         const GLchan *src = (GLchan *) img->Data
-                           + (rectArea * k + width * j + i) * 3;
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[1];
-         rgba[BCOMP] = src[2];
-         rgba[ACOMP] = CHAN_MAX;
-         return;
-      }
-   case GL_ALPHA:
-      {
-         const GLchan *src = (GLchan *) img->Data
-                           + (rectArea * k + width * j + i);
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = 0;
-         rgba[GCOMP] = 0;
-         rgba[BCOMP] = 0;
-         rgba[ACOMP] = src[0];
-         return;
-      }
-   case GL_LUMINANCE:
-      {
-         const GLchan *src = (GLchan *) img->Data
-                           + (rectArea * k + width * j + i);
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[0];
-         rgba[BCOMP] = src[0];
-         rgba[ACOMP] = CHAN_MAX;
-         return;
-      }
-   case GL_INTENSITY:
-      {
-         const GLchan *src = (GLchan *) img->Data
-                           + (rectArea * k + width * j + i);
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[0];
-         rgba[BCOMP] = src[0];
-         rgba[ACOMP] = src[0];
-         return;
-      }
-   case GL_LUMINANCE_ALPHA:
-      {
-         const GLchan *src = (GLchan *) img->Data
-                           + (rectArea * k + width * j + i) * 2;
-         GLchan *rgba = (GLchan *) texel;
-         rgba[RCOMP] = src[0];
-         rgba[GCOMP] = src[0];
-         rgba[BCOMP] = src[0];
-         rgba[ACOMP] = src[1];
-         return;
-      }
-   case GL_COLOR_INDEX:
-      {
-         const GLchan *src = (GLchan *) img->Data
-                           + (rectArea * k + width * j + i);
-         GLchan *index = (GLchan *) texel;
-         *index = *src;
-         return;
-      }
-   case GL_DEPTH_COMPONENT:
-      {
-         const GLfloat *src = (GLfloat *) img->Data
-                            + (rectArea * k + width * j + i);
-         GLfloat *depth = (GLfloat *) texel;
-         *depth = *src;
-         return;
-      }
-   default:
-      _mesa_problem(NULL, "Bad format in fetch_3d_texel");
-   }
-}
-
-
-
-/*
- * Examine the texImage->Format field and set the Red, Green, Blue, etc
- * texel component sizes to default values.
- * These fields are set only here by core Mesa but device drivers may
- * overwritting these fields to indicate true texel resolution.
- */
-static void
-set_teximage_component_sizes( struct gl_texture_image *texImage )
-{
-   switch (texImage->Format) {
-      case GL_ALPHA:
-         texImage->RedBits = 0;
-         texImage->GreenBits = 0;
-         texImage->BlueBits = 0;
-         texImage->AlphaBits = 8 * sizeof(GLchan);
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 0;
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 0;
-         break;
-      case GL_LUMINANCE:
-         texImage->RedBits = 0;
-         texImage->GreenBits = 0;
-         texImage->BlueBits = 0;
-         texImage->AlphaBits = 0;
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 8 * sizeof(GLchan);
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 0;
-         break;
-      case GL_LUMINANCE_ALPHA:
-         texImage->RedBits = 0;
-         texImage->GreenBits = 0;
-         texImage->BlueBits = 0;
-         texImage->AlphaBits = 8 * sizeof(GLchan);
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 8 * sizeof(GLchan);
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 0;
-         break;
-      case GL_INTENSITY:
-         texImage->RedBits = 0;
-         texImage->GreenBits = 0;
-         texImage->BlueBits = 0;
-         texImage->AlphaBits = 0;
-         texImage->IntensityBits = 8 * sizeof(GLchan);
-         texImage->LuminanceBits = 0;
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 0;
-         break;
-      case GL_RED:
-         texImage->RedBits = 8 * sizeof(GLchan);
-         texImage->GreenBits = 0;
-         texImage->BlueBits = 0;
-         texImage->AlphaBits = 0;
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 0;
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 0;
-         break;
-      case GL_GREEN:
-         texImage->RedBits = 0;
-         texImage->GreenBits = 8 * sizeof(GLchan);
-         texImage->BlueBits = 0;
-         texImage->AlphaBits = 0;
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 0;
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 0;
-         break;
-      case GL_BLUE:
-         texImage->RedBits = 0;
-         texImage->GreenBits = 0;
-         texImage->BlueBits = 8 * sizeof(GLchan);
-         texImage->AlphaBits = 0;
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 0;
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 0;
-         break;
-      case GL_RGB:
-      case GL_BGR:
-         texImage->RedBits = 8 * sizeof(GLchan);
-         texImage->GreenBits = 8 * sizeof(GLchan);
-         texImage->BlueBits = 8 * sizeof(GLchan);
-         texImage->AlphaBits = 0;
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 0;
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 0;
-         break;
-      case GL_RGBA:
-      case GL_BGRA:
-      case GL_ABGR_EXT:
-         texImage->RedBits = 8 * sizeof(GLchan);
-         texImage->GreenBits = 8 * sizeof(GLchan);
-         texImage->BlueBits = 8 * sizeof(GLchan);
-         texImage->AlphaBits = 8 * sizeof(GLchan);
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 0;
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 0;
-         break;
-      case GL_COLOR_INDEX:
-         texImage->RedBits = 0;
-         texImage->GreenBits = 0;
-         texImage->BlueBits = 0;
-         texImage->AlphaBits = 0;
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 0;
-         texImage->IndexBits = 8 * sizeof(GLchan);
-         texImage->DepthBits = 0;
-         break;
-      case GL_DEPTH_COMPONENT:
-         texImage->RedBits = 0;
-         texImage->GreenBits = 0;
-         texImage->BlueBits = 0;
-         texImage->AlphaBits = 0;
-         texImage->IntensityBits = 0;
-         texImage->LuminanceBits = 0;
-         texImage->IndexBits = 0;
-         texImage->DepthBits = 8 * sizeof(GLfloat);
-         break;
-      default:
-         _mesa_problem(NULL, "unexpected format in set_teximage_component_sizes");
-   }
-}
-#endif
-
-
-
 /*
  * Given an internal texture format enum or 1, 2, 3, 4 return the
  * corresponding _base_ internal format:  GL_ALPHA, GL_LUMINANCE,
  * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA.  Return the
  * number of components for the format.  Return -1 if invalid enum.
+ *
+ * GH: Do we really need this?  We have the number of bytes per texel
+ * in the texture format structures, so why don't we just use that?
  */
 static GLint
 components_in_intformat( GLint format )
@@ -526,6 +128,7 @@ components_in_intformat( GLint format )
          return -1;  /* error */
    }
 }
+#endif
 
 
 /*