Unify ARB_depth_texture and SGIX_depth_texture

The ARB extension is a superset of the older SGIX extension.  Any
hardware that can support the SGIX version can also support the ARB
version.  In Mesa, any driver that supports one also supports the
other.  This unification just simplifies some bits of code.

4 files changed, 1 insertions, 6 deletions

diff --git a/src/mesa/drivers/dri/i915/i915_context.c b/src/mesa/drivers/dri/i915/i915_context.c
index efcac911aa..e0ddc7fd61 100644
--- a/src/mesa/drivers/dri/i915/i915_context.c
+++ b/src/mesa/drivers/dri/i915/i915_context.c
@@ -56,8 +56,6 @@ static const struct dri_extension i915_extensions[] = {
    {"GL_ARB_shadow", NULL},
    {"GL_ARB_texture_non_power_of_two", NULL},
    {"GL_EXT_shadow_funcs", NULL},
-   /* ARB extn won't work if not enabled */
-   {"GL_SGIX_depth_texture", NULL},
    {NULL, NULL}
 };
 
diff --git a/src/mesa/drivers/dri/intel/intel_context.c b/src/mesa/drivers/dri/intel/intel_context.c
index 1dd3ee7d0a..e53972c46d 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -404,8 +404,6 @@ static const struct dri_extension brw_extensions[] = {
    { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions },
    { "GL_EXT_shadow_funcs",               NULL },
    { "GL_EXT_texture_sRGB",		  NULL },
-   /* ARB extn won't work if not enabled */
-   { "GL_SGIX_depth_texture",             NULL },
    { NULL,                                NULL }
 };
 
diff --git a/src/mesa/drivers/dri/intel/intel_tex_copy.c b/src/mesa/drivers/dri/intel/intel_tex_copy.c
index a7b88b39c0..f4cb4a781c 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_copy.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_copy.c
@@ -60,7 +60,7 @@ get_teximage_source(struct intel_context *intel, GLenum internalFormat)
 
    switch (internalFormat) {
    case GL_DEPTH_COMPONENT:
-   case GL_DEPTH_COMPONENT16_ARB:
+   case GL_DEPTH_COMPONENT16:
       irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
       if (irb && irb->region && irb->region->cpp == 2)
          return irb->region;
diff --git a/src/mesa/drivers/dri/r300/r300_context.c b/src/mesa/drivers/dri/r300/r300_context.c
index ee4a69dce3..37436275e3 100644
--- a/src/mesa/drivers/dri/r300/r300_context.c
+++ b/src/mesa/drivers/dri/r300/r300_context.c
@@ -138,7 +138,6 @@ const struct dri_extension card_extensions[] = {
   {"GL_NV_blend_square",		NULL},
   {"GL_NV_vertex_program",		GL_NV_vertex_program_functions},
   {"GL_SGIS_generate_mipmap",		NULL},
-  {"GL_SGIX_depth_texture",		NULL},
   {NULL,				NULL}
   /* *INDENT-ON* */
 };