Imported the Savage DRI driver from the savage-2-0-0-branch of DRI CVS
[mesa.git] / src / mesa / main / texformat.c
index b5c721f211d24dd4c4a3773faa8c3d0ce3e0ba56..7222b77eb597608f225e27462c40aef516f01027 100644 (file)
  * Have to have this so the FetchTexel function pointer is never NULL.
  */
 static void fetch_null_texel( const struct gl_texture_image *texImage,
-                             GLint i, GLint j, GLint k, GLvoid *texel )
+                             GLint i, GLint j, GLint k, GLchan *texel )
 {
-   GLchan *rgba = (GLchan *) texel;
-   rgba[RCOMP] = 0;
-   rgba[GCOMP] = 0;
-   rgba[BCOMP] = 0;
-   rgba[ACOMP] = 0;
+   texel[RCOMP] = 0;
+   texel[GCOMP] = 0;
+   texel[BCOMP] = 0;
+   texel[ACOMP] = 0;
+   _mesa_warning(NULL, "fetch_null_texel() called!");
+}
+
+static void fetch_null_texelf( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   texel[RCOMP] = 0.0;
+   texel[GCOMP] = 0.0;
+   texel[BCOMP] = 0.0;
+   texel[ACOMP] = 0.0;
+   _mesa_warning(NULL, "fetch_null_texelf() called!");
 }
 
 
@@ -84,9 +94,12 @@ const struct gl_texture_format _mesa_texformat_rgba = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    4 * CHAN_BITS / 8,                  /* TexelBytes */
-   fetch_1d_texel_rgba,                        /* FetchTexel1D */
-   fetch_2d_texel_rgba,                        /* FetchTexel2D */
-   fetch_3d_texel_rgba,                        /* FetchTexel3D */
+   fetch_texel_1d_rgba,                        /* FetchTexel1D */
+   fetch_texel_2d_rgba,                        /* FetchTexel2D */
+   fetch_texel_3d_rgba,                        /* FetchTexel3D */
+   fetch_texel_1d_f_rgba,              /* FetchTexel1Df */
+   fetch_texel_2d_f_rgba,              /* FetchTexel2Df */
+   fetch_texel_3d_f_rgba,              /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_rgb = {
@@ -101,9 +114,12 @@ const struct gl_texture_format _mesa_texformat_rgb = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    3 * CHAN_BITS / 8,                  /* TexelBytes */
-   fetch_1d_texel_rgb,                 /* FetchTexel1D */
-   fetch_2d_texel_rgb,                 /* FetchTexel2D */
-   fetch_3d_texel_rgb,                 /* FetchTexel3D */
+   fetch_texel_1d_rgb,                 /* FetchTexel1D */
+   fetch_texel_2d_rgb,                 /* FetchTexel2D */
+   fetch_texel_3d_rgb,                 /* FetchTexel3D */
+   fetch_texel_1d_f_rgb,               /* FetchTexel1Df */
+   fetch_texel_2d_f_rgb,               /* FetchTexel2Df */
+   fetch_texel_3d_f_rgb,               /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_alpha = {
@@ -118,9 +134,12 @@ const struct gl_texture_format _mesa_texformat_alpha = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    CHAN_BITS / 8,                      /* TexelBytes */
-   fetch_1d_texel_alpha,               /* FetchTexel1D */
-   fetch_2d_texel_alpha,               /* FetchTexel2D */
-   fetch_3d_texel_alpha,               /* FetchTexel3D */
+   fetch_texel_1d_alpha,               /* FetchTexel1D */
+   fetch_texel_2d_alpha,               /* FetchTexel2D */
+   fetch_texel_3d_alpha,               /* FetchTexel3D */
+   fetch_texel_1d_f_alpha,             /* FetchTexel1Df */
+   fetch_texel_2d_f_alpha,             /* FetchTexel2Df */
+   fetch_texel_3d_f_alpha,             /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_luminance = {
@@ -135,9 +154,12 @@ const struct gl_texture_format _mesa_texformat_luminance = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    CHAN_BITS / 8,                      /* TexelBytes */
-   fetch_1d_texel_luminance,           /* FetchTexel1D */
-   fetch_2d_texel_luminance,           /* FetchTexel2D */
-   fetch_3d_texel_luminance,           /* FetchTexel3D */
+   fetch_texel_1d_luminance,           /* FetchTexel1D */
+   fetch_texel_2d_luminance,           /* FetchTexel2D */
+   fetch_texel_3d_luminance,           /* FetchTexel3D */
+   fetch_texel_1d_f_luminance,         /* FetchTexel1Df */
+   fetch_texel_2d_f_luminance,         /* FetchTexel2Df */
+   fetch_texel_3d_f_luminance,         /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_luminance_alpha = {
@@ -152,9 +174,12 @@ const struct gl_texture_format _mesa_texformat_luminance_alpha = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2 * CHAN_BITS / 8,                  /* TexelBytes */
-   fetch_1d_texel_luminance_alpha,     /* FetchTexel1D */
-   fetch_2d_texel_luminance_alpha,     /* FetchTexel2D */
-   fetch_3d_texel_luminance_alpha,     /* FetchTexel3D */
+   fetch_texel_1d_luminance_alpha,     /* FetchTexel1D */
+   fetch_texel_2d_luminance_alpha,     /* FetchTexel2D */
+   fetch_texel_3d_luminance_alpha,     /* FetchTexel3D */
+   fetch_texel_1d_f_luminance_alpha,   /* FetchTexel1Df */
+   fetch_texel_2d_f_luminance_alpha,   /* FetchTexel2Df */
+   fetch_texel_3d_f_luminance_alpha,   /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_intensity = {
@@ -169,9 +194,12 @@ const struct gl_texture_format _mesa_texformat_intensity = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    CHAN_BITS / 8,                      /* TexelBytes */
-   fetch_1d_texel_intensity,           /* FetchTexel1D */
-   fetch_2d_texel_intensity,           /* FetchTexel2D */
-   fetch_3d_texel_intensity,           /* FetchTexel3D */
+   fetch_texel_1d_intensity,           /* FetchTexel1D */
+   fetch_texel_2d_intensity,           /* FetchTexel2D */
+   fetch_texel_3d_intensity,           /* FetchTexel3D */
+   fetch_texel_1d_f_intensity,         /* FetchTexel1Df */
+   fetch_texel_2d_f_intensity,         /* FetchTexel2Df */
+   fetch_texel_3d_f_intensity,         /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_color_index = {
@@ -186,11 +214,15 @@ const struct gl_texture_format _mesa_texformat_color_index = {
    CHAN_BITS,                          /* IndexBits */
    0,                                  /* DepthBits */
    CHAN_BITS / 8,                      /* TexelBytes */
-   fetch_1d_texel_color_index,         /* FetchTexel1D */
-   fetch_2d_texel_color_index,         /* FetchTexel2D */
-   fetch_3d_texel_color_index,         /* FetchTexel3D */
+   fetch_texel_1d_color_index,         /* FetchTexel1D */
+   fetch_texel_2d_color_index,         /* FetchTexel2D */
+   fetch_texel_3d_color_index,         /* FetchTexel3D */
+   fetch_texel_1d_f_color_index,       /* FetchTexel1Df */
+   fetch_texel_2d_f_color_index,       /* FetchTexel2Df */
+   fetch_texel_3d_f_color_index,       /* FetchTexel3Df */
 };
 
+/* XXX someday implement 16, 24 and 32-bit integer depth images */
 const struct gl_texture_format _mesa_texformat_depth_component = {
    MESA_FORMAT_DEPTH_COMPONENT,                /* MesaFormat */
    GL_DEPTH_COMPONENT,                 /* BaseFormat */
@@ -203,11 +235,95 @@ const struct gl_texture_format _mesa_texformat_depth_component = {
    0,                                  /* IndexBits */
    sizeof(GLfloat) * 8,                        /* DepthBits */
    sizeof(GLfloat),                    /* TexelBytes */
-   fetch_1d_texel_depth_component,     /* FetchTexel1D */
-   fetch_2d_texel_depth_component,     /* FetchTexel2D */
-   fetch_3d_texel_depth_component,     /* FetchTexel3D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_texel_1d_f_depth_component,   /* FetchTexel1Df */
+   fetch_texel_2d_f_depth_component,   /* FetchTexel2Df */
+   fetch_texel_3d_f_depth_component,   /* FetchTexel3Df */
+};
+
+const struct gl_texture_format _mesa_texformat_rgba_float32 = {
+   MESA_FORMAT_RGBA_FLOAT32,           /* MesaFormat */
+   GL_RGBA,                            /* BaseFormat */
+   8 * sizeof(GLfloat),                        /* RedBits */
+   8 * sizeof(GLfloat),                        /* GreenBits */
+   8 * sizeof(GLfloat),                        /* BlueBits */
+   8 * sizeof(GLfloat),                        /* AlphaBits */
+   0,                                  /* LuminanceBits */
+   0,                                  /* IntensityBits */
+   0,                                  /* IndexBits */
+   0,                                  /* DepthBits */
+   4 * sizeof(GLfloat),                        /* TexelBytes */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_texel_1d_f_rgba_f32,          /* FetchTexel1Df */
+   fetch_texel_2d_f_rgba_f32,          /* FetchTexel2Df */
+   fetch_texel_3d_f_rgba_f32,          /* FetchTexel3Df */
+};
+
+const struct gl_texture_format _mesa_texformat_rgba_float16 = {
+   MESA_FORMAT_RGBA_FLOAT16,           /* MesaFormat */
+   GL_RGBA,                            /* BaseFormat */
+   8 * sizeof(GLhalfNV),               /* RedBits */
+   8 * sizeof(GLhalfNV),               /* GreenBits */
+   8 * sizeof(GLhalfNV),               /* BlueBits */
+   8 * sizeof(GLhalfNV),               /* AlphaBits */
+   0,                                  /* LuminanceBits */
+   0,                                  /* IntensityBits */
+   0,                                  /* IndexBits */
+   0,                                  /* DepthBits */
+   4 * sizeof(GLhalfNV),                       /* TexelBytes */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_texel_1d_f_rgba_f16,          /* FetchTexel1Df */
+   fetch_texel_2d_f_rgba_f16,          /* FetchTexel2Df */
+   fetch_texel_3d_f_rgba_f16,          /* FetchTexel3Df */
+};
+
+const struct gl_texture_format _mesa_texformat_rgb_float32 = {
+   MESA_FORMAT_RGB_FLOAT32,            /* MesaFormat */
+   GL_RGB,                             /* BaseFormat */
+   8 * sizeof(GLfloat),                        /* RedBits */
+   8 * sizeof(GLfloat),                        /* GreenBits */
+   8 * sizeof(GLfloat),                        /* BlueBits */
+   0,                                  /* AlphaBits */
+   0,                                  /* LuminanceBits */
+   0,                                  /* IntensityBits */
+   0,                                  /* IndexBits */
+   0,                                  /* DepthBits */
+   4 * sizeof(GLfloat),                        /* TexelBytes */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_texel_1d_f_rgb_f32,           /* FetchTexel1Df */
+   fetch_texel_2d_f_rgb_f32,           /* FetchTexel2Df */
+   fetch_texel_3d_f_rgb_f32,           /* FetchTexel3Df */
+};
+
+const struct gl_texture_format _mesa_texformat_rgb_float16 = {
+   MESA_FORMAT_RGB_FLOAT16,            /* MesaFormat */
+   GL_RGB,                             /* BaseFormat */
+   8 * sizeof(GLhalfNV),               /* RedBits */
+   8 * sizeof(GLhalfNV),               /* GreenBits */
+   8 * sizeof(GLhalfNV),               /* BlueBits */
+   0,                                  /* AlphaBits */
+   0,                                  /* LuminanceBits */
+   0,                                  /* IntensityBits */
+   0,                                  /* IndexBits */
+   0,                                  /* DepthBits */
+   4 * sizeof(GLhalfNV),                       /* TexelBytes */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_null_texel,                   /* FetchTexel1D */
+   fetch_texel_1d_f_rgb_f16,           /* FetchTexel1Df */
+   fetch_texel_2d_f_rgb_f16,           /* FetchTexel2Df */
+   fetch_texel_3d_f_rgb_f16,           /* FetchTexel3Df */
 };
 
+
 /*@}*/
 
 
@@ -227,9 +343,12 @@ const struct gl_texture_format _mesa_texformat_rgba8888 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    4,                                  /* TexelBytes */
-   fetch_1d_texel_rgba8888,            /* FetchTexel1D */
-   fetch_2d_texel_rgba8888,            /* FetchTexel2D */
-   fetch_3d_texel_rgba8888,            /* FetchTexel3D */
+   fetch_texel_1d_rgba8888,            /* FetchTexel1D */
+   fetch_texel_2d_rgba8888,            /* FetchTexel2D */
+   fetch_texel_3d_rgba8888,            /* FetchTexel3D */
+   fetch_texel_1d_f_rgba8888,          /* FetchTexel1Df */
+   fetch_texel_2d_f_rgba8888,          /* FetchTexel2Df */
+   fetch_texel_3d_f_rgba8888,          /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_argb8888 = {
@@ -244,9 +363,12 @@ const struct gl_texture_format _mesa_texformat_argb8888 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    4,                                  /* TexelBytes */
-   fetch_1d_texel_argb8888,            /* FetchTexel1D */
-   fetch_2d_texel_argb8888,            /* FetchTexel2D */
-   fetch_3d_texel_argb8888,            /* FetchTexel3D */
+   fetch_texel_1d_argb8888,            /* FetchTexel1D */
+   fetch_texel_2d_argb8888,            /* FetchTexel2D */
+   fetch_texel_3d_argb8888,            /* FetchTexel3D */
+   fetch_texel_1d_f_argb8888,          /* FetchTexel1Df */
+   fetch_texel_2d_f_argb8888,          /* FetchTexel2Df */
+   fetch_texel_3d_f_argb8888,          /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_rgb888 = {
@@ -261,9 +383,12 @@ const struct gl_texture_format _mesa_texformat_rgb888 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    3,                                  /* TexelBytes */
-   fetch_1d_texel_rgb888,              /* FetchTexel1D */
-   fetch_2d_texel_rgb888,              /* FetchTexel2D */
-   fetch_3d_texel_rgb888,              /* FetchTexel3D */
+   fetch_texel_1d_rgb888,              /* FetchTexel1D */
+   fetch_texel_2d_rgb888,              /* FetchTexel2D */
+   fetch_texel_3d_rgb888,              /* FetchTexel3D */
+   fetch_texel_1d_f_rgb888,            /* FetchTexel1Df */
+   fetch_texel_2d_f_rgb888,            /* FetchTexel2Df */
+   fetch_texel_3d_f_rgb888,            /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_rgb565 = {
@@ -278,9 +403,12 @@ const struct gl_texture_format _mesa_texformat_rgb565 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_rgb565,              /* FetchTexel1D */
-   fetch_2d_texel_rgb565,              /* FetchTexel2D */
-   fetch_3d_texel_rgb565,              /* FetchTexel3D */
+   fetch_texel_1d_rgb565,              /* FetchTexel1D */
+   fetch_texel_2d_rgb565,              /* FetchTexel2D */
+   fetch_texel_3d_rgb565,              /* FetchTexel3D */
+   fetch_texel_1d_f_rgb565,            /* FetchTexel1Df */
+   fetch_texel_2d_f_rgb565,            /* FetchTexel2Df */
+   fetch_texel_3d_f_rgb565,            /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_argb4444 = {
@@ -295,9 +423,12 @@ const struct gl_texture_format _mesa_texformat_argb4444 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_argb4444,            /* FetchTexel1D */
-   fetch_2d_texel_argb4444,            /* FetchTexel2D */
-   fetch_3d_texel_argb4444,            /* FetchTexel3D */
+   fetch_texel_1d_argb4444,            /* FetchTexel1D */
+   fetch_texel_2d_argb4444,            /* FetchTexel2D */
+   fetch_texel_3d_argb4444,            /* FetchTexel3D */
+   fetch_texel_1d_f_argb4444,          /* FetchTexel1Df */
+   fetch_texel_2d_f_argb4444,          /* FetchTexel2Df */
+   fetch_texel_3d_f_argb4444,          /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_argb1555 = {
@@ -312,9 +443,12 @@ const struct gl_texture_format _mesa_texformat_argb1555 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_argb1555,            /* FetchTexel1D */
-   fetch_2d_texel_argb1555,            /* FetchTexel2D */
-   fetch_3d_texel_argb1555,            /* FetchTexel3D */
+   fetch_texel_1d_argb1555,            /* FetchTexel1D */
+   fetch_texel_2d_argb1555,            /* FetchTexel2D */
+   fetch_texel_3d_argb1555,            /* FetchTexel3D */
+   fetch_texel_1d_f_argb1555,          /* FetchTexel1Df */
+   fetch_texel_2d_f_argb1555,          /* FetchTexel2Df */
+   fetch_texel_3d_f_argb1555,          /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_al88 = {
@@ -329,9 +463,12 @@ const struct gl_texture_format _mesa_texformat_al88 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_al88,                        /* FetchTexel1D */
-   fetch_2d_texel_al88,                        /* FetchTexel2D */
-   fetch_3d_texel_al88,                        /* FetchTexel3D */
+   fetch_texel_1d_al88,                        /* FetchTexel1D */
+   fetch_texel_2d_al88,                        /* FetchTexel2D */
+   fetch_texel_3d_al88,                        /* FetchTexel3D */
+   fetch_texel_1d_f_al88,              /* FetchTexel1Df */
+   fetch_texel_2d_f_al88,              /* FetchTexel2Df */
+   fetch_texel_3d_f_al88,              /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_rgb332 = {
@@ -346,9 +483,12 @@ const struct gl_texture_format _mesa_texformat_rgb332 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    1,                                  /* TexelBytes */
-   fetch_1d_texel_rgb332,              /* FetchTexel1D */
-   fetch_2d_texel_rgb332,              /* FetchTexel2D */
-   fetch_3d_texel_rgb332,              /* FetchTexel3D */
+   fetch_texel_1d_rgb332,              /* FetchTexel1D */
+   fetch_texel_2d_rgb332,              /* FetchTexel2D */
+   fetch_texel_3d_rgb332,              /* FetchTexel3D */
+   fetch_texel_1d_f_rgb332,            /* FetchTexel1Df */
+   fetch_texel_2d_f_rgb332,            /* FetchTexel2Df */
+   fetch_texel_3d_f_rgb332,            /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_a8 = {
@@ -363,9 +503,12 @@ const struct gl_texture_format _mesa_texformat_a8 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    1,                                  /* TexelBytes */
-   fetch_1d_texel_a8,                  /* FetchTexel1D */
-   fetch_2d_texel_a8,                  /* FetchTexel2D */
-   fetch_3d_texel_a8,                  /* FetchTexel3D */
+   fetch_texel_1d_a8,                  /* FetchTexel1D */
+   fetch_texel_2d_a8,                  /* FetchTexel2D */
+   fetch_texel_3d_a8,                  /* FetchTexel3D */
+   fetch_texel_1d_f_a8,                        /* FetchTexel1Df */
+   fetch_texel_2d_f_a8,                        /* FetchTexel2Df */
+   fetch_texel_3d_f_a8,                        /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_l8 = {
@@ -380,9 +523,12 @@ const struct gl_texture_format _mesa_texformat_l8 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    1,                                  /* TexelBytes */
-   fetch_1d_texel_l8,                  /* FetchTexel1D */
-   fetch_2d_texel_l8,                  /* FetchTexel2D */
-   fetch_3d_texel_l8,                  /* FetchTexel3D */
+   fetch_texel_1d_l8,                  /* FetchTexel1D */
+   fetch_texel_2d_l8,                  /* FetchTexel2D */
+   fetch_texel_3d_l8,                  /* FetchTexel3D */
+   fetch_texel_1d_f_l8,                        /* FetchTexel1Df */
+   fetch_texel_2d_f_l8,                        /* FetchTexel2Df */
+   fetch_texel_3d_f_l8,                        /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_i8 = {
@@ -397,9 +543,12 @@ const struct gl_texture_format _mesa_texformat_i8 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    1,                                  /* TexelBytes */
-   fetch_1d_texel_i8,                  /* FetchTexel1D */
-   fetch_2d_texel_i8,                  /* FetchTexel2D */
-   fetch_3d_texel_i8,                  /* FetchTexel3D */
+   fetch_texel_1d_i8,                  /* FetchTexel1D */
+   fetch_texel_2d_i8,                  /* FetchTexel2D */
+   fetch_texel_3d_i8,                  /* FetchTexel3D */
+   fetch_texel_1d_f_i8,                        /* FetchTexel1Df */
+   fetch_texel_2d_f_i8,                        /* FetchTexel2Df */
+   fetch_texel_3d_f_i8,                        /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_ci8 = {
@@ -414,9 +563,12 @@ const struct gl_texture_format _mesa_texformat_ci8 = {
    8,                                  /* IndexBits */
    0,                                  /* DepthBits */
    1,                                  /* TexelBytes */
-   fetch_1d_texel_ci8,                 /* FetchTexel1D */
-   fetch_2d_texel_ci8,                 /* FetchTexel2D */
-   fetch_3d_texel_ci8,                 /* FetchTexel3D */
+   fetch_texel_1d_ci8,                 /* FetchTexel1D */
+   fetch_texel_2d_ci8,                 /* FetchTexel2D */
+   fetch_texel_3d_ci8,                 /* FetchTexel3D */
+   fetch_texel_1d_f_ci8,               /* FetchTexel1Df */
+   fetch_texel_2d_f_ci8,               /* FetchTexel2Df */
+   fetch_texel_3d_f_ci8,               /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_ycbcr = {
@@ -431,9 +583,12 @@ const struct gl_texture_format _mesa_texformat_ycbcr = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_ycbcr,               /* FetchTexel1D */
-   fetch_2d_texel_ycbcr,               /* FetchTexel2D */
-   fetch_3d_texel_ycbcr,               /* FetchTexel3D */
+   fetch_texel_1d_ycbcr,               /* FetchTexel1D */
+   fetch_texel_2d_ycbcr,               /* FetchTexel2D */
+   fetch_texel_3d_ycbcr,               /* FetchTexel3D */
+   fetch_texel_1d_f_ycbcr,             /* FetchTexel1Df */
+   fetch_texel_2d_f_ycbcr,             /* FetchTexel2Df */
+   fetch_texel_3d_f_ycbcr,             /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_ycbcr_rev = {
@@ -448,9 +603,52 @@ const struct gl_texture_format _mesa_texformat_ycbcr_rev = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_ycbcr_rev,           /* FetchTexel1D */
-   fetch_2d_texel_ycbcr_rev,           /* FetchTexel2D */
-   fetch_3d_texel_ycbcr_rev,           /* FetchTexel3D */
+   fetch_texel_1d_ycbcr_rev,           /* FetchTexel1D */
+   fetch_texel_2d_ycbcr_rev,           /* FetchTexel2D */
+   fetch_texel_3d_ycbcr_rev,           /* FetchTexel3D */
+   fetch_texel_1d_f_ycbcr_rev,         /* FetchTexel1Df */
+   fetch_texel_2d_f_ycbcr_rev,         /* FetchTexel2Df */
+   fetch_texel_3d_f_ycbcr_rev,         /* FetchTexel3Df */
+};
+
+const struct gl_texture_format _mesa_texformat_rgb_fxt1 = {
+   MESA_FORMAT_RGB_FXT1,               /* MesaFormat */
+   GL_RGB,                             /* BaseFormat */
+   4, /*approx*/                       /* RedBits */
+   4, /*approx*/                       /* GreenBits */
+   4, /*approx*/                       /* BlueBits */
+   0,                                  /* AlphaBits */
+   0,                                  /* LuminanceBits */
+   0,                                  /* IntensityBits */
+   0,                                  /* IndexBits */
+   0,                                  /* DepthBits */
+   0,                                  /* TexelBytes */
+   NULL, /*impossible*/                /* FetchTexel1D */
+   fetch_texel_2d_rgb_fxt1,            /* FetchTexel2D */
+   NULL, /*impossible*/                /* FetchTexel3D */
+   NULL, /*impossible*/                /* FetchTexel1Df */
+   fetch_texel_2d_f_rgb_fxt1,          /* FetchTexel2Df */
+   NULL, /*impossible*/                /* FetchTexel3Df */
+};
+
+const struct gl_texture_format _mesa_texformat_rgba_fxt1 = {
+   MESA_FORMAT_RGBA_FXT1,              /* MesaFormat */
+   GL_RGBA,                            /* BaseFormat */
+   4, /*approx*/                       /* RedBits */
+   4, /*approx*/                       /* GreenBits */
+   4, /*approx*/                       /* BlueBits */
+   1, /*approx*/                       /* AlphaBits */
+   0,                                  /* LuminanceBits */
+   0,                                  /* IntensityBits */
+   0,                                  /* IndexBits */
+   0,                                  /* DepthBits */
+   0,                                  /* TexelBytes */
+   NULL, /*impossible*/                /* FetchTexel1D */
+   fetch_texel_2d_rgba_fxt1,           /* FetchTexel2D */
+   NULL, /*impossible*/                /* FetchTexel3D */
+   NULL, /*impossible*/                /* FetchTexel1Df */
+   fetch_texel_2d_f_rgba_fxt1,                 /* FetchTexel2Df */
+   NULL, /*impossible*/                /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_rgb_dxt1 = {
@@ -466,8 +664,11 @@ const struct gl_texture_format _mesa_texformat_rgb_dxt1 = {
    0,                                  /* DepthBits */
    0,                                  /* TexelBytes */
    NULL, /*impossible*/                /* FetchTexel1D */
-   fetch_2d_texel_rgb_dxt1,            /* FetchTexel2D */
+   fetch_texel_2d_rgb_dxt1,            /* FetchTexel2D */
    NULL, /*impossible*/                /* FetchTexel3D */
+   NULL, /*impossible*/                /* FetchTexel1Df */
+   fetch_texel_2d_f_rgb_dxt1,          /* FetchTexel2Df */
+   NULL, /*impossible*/                /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_rgba_dxt1 = {
@@ -483,8 +684,11 @@ const struct gl_texture_format _mesa_texformat_rgba_dxt1 = {
    0,                                  /* DepthBits */
    0,                                  /* TexelBytes */
    NULL, /*impossible*/                /* FetchTexel1D */
-   fetch_2d_texel_rgba_dxt1,           /* FetchTexel2D */
+   fetch_texel_2d_rgba_dxt1,           /* FetchTexel2D */
    NULL, /*impossible*/                /* FetchTexel3D */
+   NULL, /*impossible*/                /* FetchTexel1Df */
+   fetch_texel_2d_f_rgba_dxt1,                 /* FetchTexel2Df */
+   NULL, /*impossible*/                /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_rgba_dxt3 = {
@@ -500,8 +704,11 @@ const struct gl_texture_format _mesa_texformat_rgba_dxt3 = {
    0,                                  /* DepthBits */
    0,                                  /* TexelBytes */
    NULL, /*impossible*/                /* FetchTexel1D */
-   fetch_2d_texel_rgba_dxt3,           /* FetchTexel2D */
+   fetch_texel_2d_rgba_dxt3,           /* FetchTexel2D */
    NULL, /*impossible*/                /* FetchTexel3D */
+   NULL, /*impossible*/                /* FetchTexel1Df */
+   fetch_texel_2d_f_rgba_dxt3,                 /* FetchTexel2Df */
+   NULL, /*impossible*/                /* FetchTexel3Df */
 };
 
 const struct gl_texture_format _mesa_texformat_rgba_dxt5 = {
@@ -517,8 +724,11 @@ const struct gl_texture_format _mesa_texformat_rgba_dxt5 = {
    0,                                  /* DepthBits */
    0,                                  /* TexelBytes */
    NULL, /*impossible*/                /* FetchTexel1D */
-   fetch_2d_texel_rgba_dxt5,           /* FetchTexel2D */
+   fetch_texel_2d_rgba_dxt5,           /* FetchTexel2D */
    NULL, /*impossible*/                /* FetchTexel3D */
+   NULL, /*impossible*/                /* FetchTexel1Df */
+   fetch_texel_2d_f_rgba_dxt5,                 /* FetchTexel2Df */
+   NULL, /*impossible*/                /* FetchTexel3Df */
 };
 
 
@@ -537,9 +747,10 @@ const struct gl_texture_format _mesa_texformat_abgr8888 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    4,                                  /* TexelBytes */
-   fetch_1d_texel_abgr8888,            /* FetchTexel1D */
-   fetch_2d_texel_abgr8888,            /* FetchTexel2D */
-   fetch_3d_texel_abgr8888,            /* FetchTexel3D */
+   fetch_texel_1d_abgr8888,            /* FetchTexel1D */
+   fetch_texel_2d_abgr8888,            /* FetchTexel2D */
+   fetch_texel_3d_abgr8888,            /* FetchTexel3D */
+   /* XXX float fetchers */
 };
 
 const struct gl_texture_format _mesa_texformat_bgra8888 = {
@@ -555,9 +766,10 @@ const struct gl_texture_format _mesa_texformat_bgra8888 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    4,                                  /* TexelBytes */
-   fetch_1d_texel_bgra8888,            /* FetchTexel1D */
-   fetch_2d_texel_bgra8888,            /* FetchTexel2D */
-   fetch_3d_texel_bgra8888,            /* FetchTexel3D */
+   fetch_texel_1d_bgra8888,            /* FetchTexel1D */
+   fetch_texel_2d_bgra8888,            /* FetchTexel2D */
+   fetch_texel_3d_bgra8888,            /* FetchTexel3D */
+   /* XXX float fetchers */
 };
 
 const struct gl_texture_format _mesa_texformat_bgr888 = {
@@ -573,9 +785,10 @@ const struct gl_texture_format _mesa_texformat_bgr888 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    3,                                  /* TexelBytes */
-   fetch_1d_texel_bgr888,              /* FetchTexel1D */
-   fetch_2d_texel_bgr888,              /* FetchTexel2D */
-   fetch_3d_texel_bgr888,              /* FetchTexel3D */
+   fetch_texel_1d_bgr888,              /* FetchTexel1D */
+   fetch_texel_2d_bgr888,              /* FetchTexel2D */
+   fetch_texel_3d_bgr888,              /* FetchTexel3D */
+   /* XXX float fetchers */
 };
 
 const struct gl_texture_format _mesa_texformat_bgr565 = {
@@ -591,9 +804,10 @@ const struct gl_texture_format _mesa_texformat_bgr565 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_bgr565,              /* FetchTexel1D */
-   fetch_2d_texel_bgr565,              /* FetchTexel2D */
-   fetch_3d_texel_bgr565,              /* FetchTexel3D */
+   fetch_texel_1d_bgr565,              /* FetchTexel1D */
+   fetch_texel_2d_bgr565,              /* FetchTexel2D */
+   fetch_texel_3d_bgr565,              /* FetchTexel3D */
+   /* XXX float fetchers */
 };
 
 const struct gl_texture_format _mesa_texformat_bgra4444 = {
@@ -609,9 +823,10 @@ const struct gl_texture_format _mesa_texformat_bgra4444 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_bgra4444,            /* FetchTexel1D */
-   fetch_2d_texel_bgra4444,            /* FetchTexel2D */
-   fetch_3d_texel_bgra4444,            /* FetchTexel3D */
+   fetch_texel_1d_bgra4444,            /* FetchTexel1D */
+   fetch_texel_2d_bgra4444,            /* FetchTexel2D */
+   fetch_texel_3d_bgra4444,            /* FetchTexel3D */
+   /* XXX float fetchers */
 };
 
 const struct gl_texture_format _mesa_texformat_bgra5551 = {
@@ -627,9 +842,10 @@ const struct gl_texture_format _mesa_texformat_bgra5551 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_bgra1555,            /* FetchTexel1D */
-   fetch_2d_texel_bgra1555,            /* FetchTexel2D */
-   fetch_3d_texel_bgra1555,            /* FetchTexel3D */
+   fetch_texel_1d_bgra1555,            /* FetchTexel1D */
+   fetch_texel_2d_bgra1555,            /* FetchTexel2D */
+   fetch_texel_3d_bgra1555,            /* FetchTexel3D */
+   /* XXX float fetchers */
 };
 
 const struct gl_texture_format _mesa_texformat_la88 = {
@@ -645,9 +861,10 @@ const struct gl_texture_format _mesa_texformat_la88 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    2,                                  /* TexelBytes */
-   fetch_1d_texel_la88,                        /* FetchTexel1D */
-   fetch_2d_texel_la88,                        /* FetchTexel2D */
-   fetch_3d_texel_la88,                        /* FetchTexel3D */
+   fetch_texel_1d_la88,                        /* FetchTexel1D */
+   fetch_texel_2d_la88,                        /* FetchTexel2D */
+   fetch_texel_3d_la88,                        /* FetchTexel3D */
+   /* XXX float fetchers */
 };
 
 const struct gl_texture_format _mesa_texformat_bgr233 = {
@@ -663,9 +880,10 @@ const struct gl_texture_format _mesa_texformat_bgr233 = {
    0,                                  /* IndexBits */
    0,                                  /* DepthBits */
    1,                                  /* TexelBytes */
-   fetch_1d_texel_bgr233,              /* FetchTexel1D */
-   fetch_2d_texel_bgr233,              /* FetchTexel2D */
-   fetch_3d_texel_bgr233,              /* FetchTexel3D */
+   fetch_texel_1d_bgr233,              /* FetchTexel1D */
+   fetch_texel_2d_bgr233,              /* FetchTexel2D */
+   fetch_texel_3d_bgr233,              /* FetchTexel3D */
+   /* XXX float fetchers */
 };
 #endif
 
@@ -691,6 +909,9 @@ const struct gl_texture_format _mesa_null_texformat = {
    fetch_null_texel,                   /* FetchTexel1D */
    fetch_null_texel,                   /* FetchTexel2D */
    fetch_null_texel,                   /* FetchTexel3D */
+   fetch_null_texelf,                  /* FetchTexel1Df */
+   fetch_null_texelf,                  /* FetchTexel2Df */
+   fetch_null_texelf,                  /* FetchTexel3Df */
 };
 
 /*@}*/
@@ -716,15 +937,16 @@ _mesa_is_hardware_tex_format( const struct gl_texture_format *format )
 
 
 /**
- * Choose an appropriate texture format.
+ * Choose an appropriate texture format given the format, type and
+ * internalFormat parameters passed to glTexImage().
  *
- * \param ctx GL context.
- * \param internalFormat internal texture format.
- * \param format pixel format.
- * \param type data type.
+ * \param ctx  the GL context.
+ * \param internalFormat  user's prefered internal texture format.
+ * \param format  incoming image pixel format.
+ * \param type  incoming image data type.
  *
- * \return a pointer to a gl_texture_format in which to store the texture on
- * success, or NULL on failure.
+ * \return a pointer to a gl_texture_format object which describes the
+ * choosen texture format, or NULL on failure.
  * 
  * This is called via dd_function_table::ChooseTextureFormat.  Hardware drivers
  * typically override this function with a specialized version.
@@ -838,13 +1060,17 @@ _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
    case GL_COMPRESSED_RGB_ARB:
       if (!ctx->Extensions.ARB_texture_compression)
         _mesa_problem(ctx, "texture compression extension not enabled");
-      if (ctx->Extensions.EXT_texture_compression_s3tc)
+      if (ctx->Extensions.TDFX_texture_compression_FXT1)
+         return &_mesa_texformat_rgb_fxt1;
+      else if (ctx->Extensions.EXT_texture_compression_s3tc || ctx->Extensions.S3_s3tc)
          return &_mesa_texformat_rgb_dxt1;
       return &_mesa_texformat_rgb;
    case GL_COMPRESSED_RGBA_ARB:
       if (!ctx->Extensions.ARB_texture_compression)
         _mesa_problem(ctx, "texture compression extension not enabled");
-      if (ctx->Extensions.EXT_texture_compression_s3tc)
+      if (ctx->Extensions.TDFX_texture_compression_FXT1)
+         return &_mesa_texformat_rgba_fxt1;
+      else if (ctx->Extensions.EXT_texture_compression_s3tc || ctx->Extensions.S3_s3tc)
          return &_mesa_texformat_rgba_dxt3;  /* Not rgba_dxt1!  See the spec */
       return &_mesa_texformat_rgba;
 
@@ -855,6 +1081,18 @@ _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
       else
          return &_mesa_texformat_ycbcr_rev;
 
+   /* GL_3DFX_texture_compression_FXT1 */
+   case GL_COMPRESSED_RGB_FXT1_3DFX:
+      if (ctx->Extensions.TDFX_texture_compression_FXT1)
+         return &_mesa_texformat_rgb_fxt1;
+      else
+         return NULL;
+   case GL_COMPRESSED_RGBA_FXT1_3DFX:
+      if (ctx->Extensions.TDFX_texture_compression_FXT1)
+         return &_mesa_texformat_rgba_fxt1;
+      else
+         return NULL;
+
    /* GL_EXT_texture_compression_s3tc */
    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
       if (ctx->Extensions.EXT_texture_compression_s3tc)
@@ -877,6 +1115,31 @@ _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
       else
          return NULL;
 
+   /* GL_S3_s3tc */
+   case GL_RGB_S3TC:
+   case GL_RGB4_S3TC:
+      if (ctx->Extensions.S3_s3tc)
+         return &_mesa_texformat_rgb_dxt1;
+      else
+         return NULL;
+   case GL_RGBA_S3TC:
+   case GL_RGBA4_S3TC:
+      if (ctx->Extensions.S3_s3tc)
+         return &_mesa_texformat_rgba_dxt3;
+      else
+         return NULL;
+
+   /* XXX prototype/example code */
+   /* GL_ATI_texture_float or GL_NV_float_buffer */
+   case GL_RGBA_FLOAT32_ATI:
+      return &_mesa_texformat_rgba_float32;
+   case GL_RGBA_FLOAT16_ATI:
+      return &_mesa_texformat_rgba_float16;
+   case GL_RGB_FLOAT32_ATI:
+      return &_mesa_texformat_rgb_float32;
+   case GL_RGB_FLOAT16_ATI:
+      return &_mesa_texformat_rgb_float16;
+
    default:
       _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()");
       return NULL;