Mesa (master): intel: Change supported texture formats for separate stencil

[Chad Versace]

Module: Mesa
Branch: master
Commit: b5c847c7ca06823af3b72324056a2e478caca70b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b5c847c7ca06823af3b72324056a2e478caca70b

Author: Chad Versace <chad at chad-versace.us>
Date:   Mon May 23 13:47:27 2011 -0700

intel: Change supported texture formats for separate stencil

When hardware supports separate stencil, enable support for separate
depth/stencil texture formats in the table
intel_context.ctx.TextureFormatsSupported. If the hardware must use
separate stencil, then disable support for combined depth/stencil formats.

Reviewed-by: Eric Anholt <eric at anholt.net>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Signed-off-by: Chad Versace <chad at chad-versace.us>

---

 src/mesa/drivers/dri/intel/intel_context.c    |    7 ++++++-
 src/mesa/drivers/dri/intel/intel_tex_format.c |    1 +
 2 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/src/mesa/drivers/dri/intel/intel_context.c b/src/mesa/drivers/dri/intel/intel_context.c
index 91cf5db..2ea52c2 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -758,7 +758,12 @@ intelInitContext(struct intel_context *intel,
    ctx->TextureFormatSupported[MESA_FORMAT_AL88] = GL_TRUE;
    if (intel->gen >= 4)
       ctx->TextureFormatSupported[MESA_FORMAT_AL1616] = GL_TRUE;
-   ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = GL_TRUE;
+
+   /* Depth and stencil */
+   ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = !intel->must_use_separate_stencil;
+   ctx->TextureFormatSupported[MESA_FORMAT_X8_Z24] = intel->has_separate_stencil;
+   ctx->TextureFormatSupported[MESA_FORMAT_S8] = intel->has_separate_stencil;
+
    /*
     * This was disabled in initial FBO enabling to avoid combinations
     * of depth+stencil that wouldn't work together.  We since decided
diff --git a/src/mesa/drivers/dri/intel/intel_tex_format.c b/src/mesa/drivers/dri/intel/intel_tex_format.c
index befa615..6890a69 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_format.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_format.c
@@ -22,6 +22,7 @@ intel_mesa_format_to_rb_datatype(gl_format format)
    case MESA_FORMAT_RGB565:
    case MESA_FORMAT_ARGB1555:
    case MESA_FORMAT_ARGB4444:
+   case MESA_FORMAT_S8:
       return GL_UNSIGNED_BYTE;
    case MESA_FORMAT_R16:
    case MESA_FORMAT_RG1616: