mesa: remove a bunch of gl_renderbuffer fields

_ActualFormat is replaced by Format (MESA_FORMAT_x).
ColorEncoding, ComponentType, RedBits, GreenBits, BlueBits, etc. are
all replaced by MESA_FORMAT_x queries.

16 files changed, 113 insertions, 259 deletions

diff --git a/src/mesa/drivers/dri/common/drirenderbuffer.c b/src/mesa/drivers/dri/common/drirenderbuffer.c
index 15af99136cd..6fa1c6caa01 100644
--- a/src/mesa/drivers/dri/common/drirenderbuffer.c
+++ b/src/mesa/drivers/dri/common/drirenderbuffer.c
@@ -1,5 +1,6 @@
 
 #include "main/mtypes.h"
+#include "main/formats.h"
 #include "main/framebuffer.h"
 #include "main/renderbuffer.h"
 #include "main/imports.h"
@@ -83,47 +84,37 @@ driNewRenderbuffer(GLenum format, GLvoid *addr,
 
       if (format == GL_RGBA || format == GL_RGB5 || format == GL_RGBA8) {
          /* Color */
-         drb->Base._BaseFormat = GL_RGBA;
          drb->Base.DataType = GL_UNSIGNED_BYTE;
          if (format == GL_RGB5) {
-            drb->Base.RedBits = 5;
-            drb->Base.GreenBits = 6;
-            drb->Base.BlueBits = 5;
+            drb->Base.Format = MESA_FORMAT_RGB565;
          }
          else {
-            drb->Base.RedBits =
-            drb->Base.GreenBits =
-            drb->Base.BlueBits =
-            drb->Base.AlphaBits = 8;
+            drb->Base.Format = MESA_FORMAT_ARGB8888;
          }
       }
       else if (format == GL_DEPTH_COMPONENT16) {
          /* Depth */
-         drb->Base._BaseFormat = GL_DEPTH_COMPONENT;
          /* we always Get/Put 32-bit Z values */
          drb->Base.DataType = GL_UNSIGNED_INT;
-         drb->Base.DepthBits = 16;
+         drb->Base.Format = MESA_FORMAT_Z16;
       }
       else if (format == GL_DEPTH_COMPONENT24) {
          /* Depth */
-         drb->Base._BaseFormat = GL_DEPTH_COMPONENT;
          /* we always Get/Put 32-bit Z values */
          drb->Base.DataType = GL_UNSIGNED_INT;
-         drb->Base.DepthBits = 24;
+         drb->Base.Format = MESA_FORMAT_Z32;
       }
       else if (format == GL_DEPTH_COMPONENT32) {
          /* Depth */
-         drb->Base._BaseFormat = GL_DEPTH_COMPONENT;
          /* we always Get/Put 32-bit Z values */
          drb->Base.DataType = GL_UNSIGNED_INT;
-         drb->Base.DepthBits = 32;
+         drb->Base.Format = MESA_FORMAT_Z32;
       }
       else {
          /* Stencil */
          ASSERT(format == GL_STENCIL_INDEX8_EXT);
-         drb->Base._BaseFormat = GL_STENCIL_INDEX;
          drb->Base.DataType = GL_UNSIGNED_BYTE;
-         drb->Base.StencilBits = 8;
+         drb->Base.Format = MESA_FORMAT_S8;
       }
 
       /* XXX if we were allocating a user-created renderbuffer, we'd have
diff --git a/src/mesa/drivers/dri/i915/i915_texstate.c b/src/mesa/drivers/dri/i915/i915_texstate.c
index 03ed8a63114..e441e287eb5 100644
--- a/src/mesa/drivers/dri/i915/i915_texstate.c
+++ b/src/mesa/drivers/dri/i915/i915_texstate.c
@@ -80,7 +80,7 @@ translate_texture_format(GLuint mesa_format, GLuint internal_format,
       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
    case MESA_FORMAT_RGBA_DXT5:
       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
-   case MESA_FORMAT_S8_Z24:
+   case MESA_FORMAT_Z24_S8:
       return (MAPSURF_32BIT | MT_32BIT_xI824);
    default:
       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
diff --git a/src/mesa/drivers/dri/intel/intel_buffers.c b/src/mesa/drivers/dri/intel/intel_buffers.c
index e7357e78c53..fce227e9d9e 100644
--- a/src/mesa/drivers/dri/intel/intel_buffers.c
+++ b/src/mesa/drivers/dri/intel/intel_buffers.c
@@ -257,7 +257,7 @@ intel_draw_buffer(GLcontext * ctx, struct gl_framebuffer *fb)
    if (fb->_StencilBuffer && fb->_StencilBuffer->Wrapped) {
       irbStencil = intel_renderbuffer(fb->_StencilBuffer->Wrapped);
       if (irbStencil && irbStencil->region) {
-         ASSERT(irbStencil->Base._ActualFormat == GL_DEPTH24_STENCIL8_EXT);
+         ASSERT(irbStencil->Base.Format == MESA_FORMAT_Z24_S8);
          FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_FALSE);
       }
       else {
diff --git a/src/mesa/drivers/dri/intel/intel_context.c b/src/mesa/drivers/dri/intel/intel_context.c
index d49d95768db..6820393e000 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -189,19 +189,7 @@ intelGetString(GLcontext * ctx, GLenum name)
 static unsigned
 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 {
-   switch (rb->Base._ActualFormat) {
-   case GL_RGB5:
-   case GL_DEPTH_COMPONENT16:
-      return 16;
-   case GL_RGB8:
-   case GL_RGBA8:
-   case GL_DEPTH_COMPONENT24:
-   case GL_DEPTH24_STENCIL8_EXT:
-   case GL_STENCIL_INDEX8_EXT:
-      return 32;
-   default:
-      return 0;
-   }
+   return _mesa_get_format_bytes(rb->Base.Format) * 8;
 }
 
 void
diff --git a/src/mesa/drivers/dri/intel/intel_fbo.c b/src/mesa/drivers/dri/intel/intel_fbo.c
index 3b4b90f2dcc..292cccf7f2b 100644
--- a/src/mesa/drivers/dri/intel/intel_fbo.c
+++ b/src/mesa/drivers/dri/intel/intel_fbo.c
@@ -114,11 +114,8 @@ intel_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    case GL_R3_G3_B2:
    case GL_RGB4:
    case GL_RGB5:
-      rb->_ActualFormat = GL_RGB5;
+      rb->Format = MESA_FORMAT_RGB565;
       rb->DataType = GL_UNSIGNED_BYTE;
-      rb->RedBits = 5;
-      rb->GreenBits = 6;
-      rb->BlueBits = 5;
       irb->texformat = MESA_FORMAT_RGB565;
       cpp = 2;
       break;
@@ -127,12 +124,8 @@ intel_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    case GL_RGB10:
    case GL_RGB12:
    case GL_RGB16:
-      rb->_ActualFormat = GL_RGB8;
+      rb->Format = MESA_FORMAT_ARGB8888;
       rb->DataType = GL_UNSIGNED_BYTE;
-      rb->RedBits = 8;
-      rb->GreenBits = 8;
-      rb->BlueBits = 8;
-      rb->AlphaBits = 0;
       irb->texformat = MESA_FORMAT_ARGB8888; /* XXX: Need xrgb8888 */
       cpp = 4;
       break;
@@ -144,12 +137,8 @@ intel_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    case GL_RGB10_A2:
    case GL_RGBA12:
    case GL_RGBA16:
-      rb->_ActualFormat = GL_RGBA8;
+      rb->Format = MESA_FORMAT_ARGB8888;
       rb->DataType = GL_UNSIGNED_BYTE;
-      rb->RedBits = 8;
-      rb->GreenBits = 8;
-      rb->BlueBits = 8;
-      rb->AlphaBits = 8;
       irb->texformat = MESA_FORMAT_ARGB8888;
       cpp = 4;
       break;
@@ -159,36 +148,31 @@ intel_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    case GL_STENCIL_INDEX8_EXT:
    case GL_STENCIL_INDEX16_EXT:
       /* alloc a depth+stencil buffer */
-      rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
+      rb->Format = MESA_FORMAT_Z24_S8;
       rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
-      rb->StencilBits = 8;
       cpp = 4;
-      irb->texformat = MESA_FORMAT_S8_Z24;
+      irb->texformat = MESA_FORMAT_Z24_S8;
       break;
    case GL_DEPTH_COMPONENT16:
-      rb->_ActualFormat = GL_DEPTH_COMPONENT16;
+      rb->Format = MESA_FORMAT_Z16;
       rb->DataType = GL_UNSIGNED_SHORT;
-      rb->DepthBits = 16;
       cpp = 2;
       irb->texformat = MESA_FORMAT_Z16;
       break;
    case GL_DEPTH_COMPONENT:
    case GL_DEPTH_COMPONENT24:
    case GL_DEPTH_COMPONENT32:
-      rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
+      rb->Format = MESA_FORMAT_Z24_S8;
       rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
-      rb->DepthBits = 24;
       cpp = 4;
-      irb->texformat = MESA_FORMAT_S8_Z24;
+      irb->texformat = MESA_FORMAT_Z24_S8;
       break;
    case GL_DEPTH_STENCIL_EXT:
    case GL_DEPTH24_STENCIL8_EXT:
-      rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
+      rb->Format = MESA_FORMAT_Z24_S8;
       rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
-      rb->DepthBits = 24;
-      rb->StencilBits = 8;
       cpp = 4;
-      irb->texformat = MESA_FORMAT_S8_Z24;
+      irb->texformat = MESA_FORMAT_Z24_S8;
       break;
    default:
       _mesa_problem(ctx,
@@ -196,6 +180,8 @@ intel_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
       return GL_FALSE;
    }
 
+   rb->_BaseFormat = _mesa_base_fbo_format(ctx, internalFormat);
+
    intelFlush(ctx);
 
    /* free old region */
@@ -245,7 +231,7 @@ intel_alloc_window_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    ASSERT(rb->Name == 0);
    rb->Width = width;
    rb->Height = height;
-   rb->_ActualFormat = internalFormat;
+   rb->InternalFormat = internalFormat;
 
    return GL_TRUE;
 }
@@ -324,62 +310,46 @@ intel_create_renderbuffer(GLenum intFormat)
 
    switch (intFormat) {
    case GL_RGB5:
-      irb->Base._ActualFormat = GL_RGB5;
-      irb->Base._BaseFormat = GL_RGBA;
-      irb->Base.RedBits = 5;
-      irb->Base.GreenBits = 6;
-      irb->Base.BlueBits = 5;
+      irb->Base.Format = MESA_FORMAT_RGB565;
+      irb->Base._BaseFormat = GL_RGB;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
       irb->texformat = MESA_FORMAT_RGB565;
       break;
    case GL_RGB8:
-      irb->Base._ActualFormat = GL_RGB8;
+      irb->Base.Format = MESA_FORMAT_ARGB8888; /* XXX: NEED XRGB8888 */
       irb->Base._BaseFormat = GL_RGB;
-      irb->Base.RedBits = 8;
-      irb->Base.GreenBits = 8;
-      irb->Base.BlueBits = 8;
-      irb->Base.AlphaBits = 0;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
       irb->texformat = MESA_FORMAT_ARGB8888; /* XXX: NEED XRGB8888 */
       break;
    case GL_RGBA8:
-      irb->Base._ActualFormat = GL_RGBA8;
+      irb->Base.Format = MESA_FORMAT_ARGB8888;
       irb->Base._BaseFormat = GL_RGBA;
-      irb->Base.RedBits = 8;
-      irb->Base.GreenBits = 8;
-      irb->Base.BlueBits = 8;
-      irb->Base.AlphaBits = 8;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
       irb->texformat = MESA_FORMAT_ARGB8888;
       break;
    case GL_STENCIL_INDEX8_EXT:
-      irb->Base._ActualFormat = GL_STENCIL_INDEX8_EXT;
+      irb->Base.Format = MESA_FORMAT_Z24_S8;
       irb->Base._BaseFormat = GL_STENCIL_INDEX;
-      irb->Base.StencilBits = 8;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
-      irb->texformat = MESA_FORMAT_S8_Z24;
+      irb->texformat = MESA_FORMAT_Z24_S8;
       break;
    case GL_DEPTH_COMPONENT16:
-      irb->Base._ActualFormat = GL_DEPTH_COMPONENT16;
+      irb->Base.Format = MESA_FORMAT_Z16;
       irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
-      irb->Base.DepthBits = 16;
       irb->Base.DataType = GL_UNSIGNED_SHORT;
       irb->texformat = MESA_FORMAT_Z16;
       break;
    case GL_DEPTH_COMPONENT24:
-      irb->Base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
+      irb->Base.Format = MESA_FORMAT_Z24_S8;
       irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
-      irb->Base.DepthBits = 24;
       irb->Base.DataType = GL_UNSIGNED_INT;
-      irb->texformat = MESA_FORMAT_S8_Z24;
+      irb->texformat = MESA_FORMAT_Z24_S8;
       break;
    case GL_DEPTH24_STENCIL8_EXT:
-      irb->Base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
-      irb->Base._BaseFormat = GL_DEPTH_STENCIL_EXT;
-      irb->Base.DepthBits = 24;
-      irb->Base.StencilBits = 8;
+      irb->Base.Format = MESA_FORMAT_Z24_S8;
+      irb->Base._BaseFormat = GL_DEPTH_STENCIL;
       irb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
-      irb->texformat = MESA_FORMAT_S8_Z24;
+      irb->texformat = MESA_FORMAT_Z24_S8;
       break;
    default:
       _mesa_problem(NULL,
@@ -468,38 +438,26 @@ intel_update_wrapper(GLcontext *ctx, struct intel_renderbuffer *irb,
    gl_format texFormat;
 
    if (texImage->TexFormat == MESA_FORMAT_ARGB8888) {
-      irb->Base._ActualFormat = GL_RGBA8;
-      irb->Base._BaseFormat = GL_RGBA;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
       DBG("Render to RGBA8 texture OK\n");
    }
    else if (texImage->TexFormat == MESA_FORMAT_RGB565) {
-      irb->Base._ActualFormat = GL_RGB5;
-      irb->Base._BaseFormat = GL_RGB;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
       DBG("Render to RGB5 texture OK\n");
    }
    else if (texImage->TexFormat == MESA_FORMAT_ARGB1555) {
-      irb->Base._ActualFormat = GL_RGB5_A1;
-      irb->Base._BaseFormat = GL_RGBA;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
       DBG("Render to ARGB1555 texture OK\n");
    }
    else if (texImage->TexFormat == MESA_FORMAT_ARGB4444) {
-      irb->Base._ActualFormat = GL_RGBA4;
-      irb->Base._BaseFormat = GL_RGBA;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
       DBG("Render to ARGB4444 texture OK\n");
    }
    else if (texImage->TexFormat == MESA_FORMAT_Z16) {
-      irb->Base._ActualFormat = GL_DEPTH_COMPONENT16;
-      irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
       irb->Base.DataType = GL_UNSIGNED_SHORT;
       DBG("Render to DEPTH16 texture OK\n");
    }
-   else if (texImage->TexFormat == MESA_FORMAT_S8_Z24) {
-      irb->Base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
-      irb->Base._BaseFormat = GL_DEPTH_STENCIL_EXT;
+   else if (texImage->TexFormat == MESA_FORMAT_Z24_S8) {
       irb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
       DBG("Render to DEPTH_STENCIL texture OK\n");
    }
@@ -508,17 +466,14 @@ intel_update_wrapper(GLcontext *ctx, struct intel_renderbuffer *irb,
       return GL_FALSE;
    }
 
+   irb->Base.Format = texImage->TexFormat;
+
    texFormat = texImage->TexFormat;
 
-   irb->Base.InternalFormat = irb->Base._ActualFormat;
+   irb->Base.InternalFormat = texImage->InternalFormat;
+   irb->Base._BaseFormat = _mesa_base_fbo_format(ctx, irb->Base.InternalFormat);
    irb->Base.Width = texImage->Width;
    irb->Base.Height = texImage->Height;
-   irb->Base.RedBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE);
-   irb->Base.GreenBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE);
-   irb->Base.BlueBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_BLUE_SIZE);
-   irb->Base.AlphaBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_ALPHA_SIZE);
-   irb->Base.DepthBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_DEPTH_SIZE_ARB);
-   irb->Base.StencilBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_STENCIL_SIZE_EXT);
 
    irb->Base.Delete = intel_delete_renderbuffer;
    irb->Base.AllocStorage = intel_nop_alloc_storage;
diff --git a/src/mesa/drivers/dri/intel/intel_span.c b/src/mesa/drivers/dri/intel/intel_span.c
index 5bbcce6fe4a..540ebca15c0 100644
--- a/src/mesa/drivers/dri/intel/intel_span.c
+++ b/src/mesa/drivers/dri/intel/intel_span.c
@@ -621,7 +621,7 @@ intel_set_span_functions(struct intel_context *intel,
       }
       break;
    case MESA_FORMAT_ARGB8888:
-      if (rb->AlphaBits == 0) { /* XXX: Need xRGB8888 Mesa format */
+      if (0 /*rb->AlphaBits == 0*/) { /* XXX: Need xRGB8888 Mesa format */
 	 /* 8888 RGBx */
 	 switch (tiling) {
 	 case I915_TILING_NONE:
@@ -665,26 +665,13 @@ intel_set_span_functions(struct intel_context *intel,
 	 break;
       }
       break;
-   case MESA_FORMAT_S8_Z24:
+   case MESA_FORMAT_Z24_S8:
       /* There are a few different ways SW asks us to access the S8Z24 data:
        * Z24 depth-only depth reads
        * S8Z24 depth reads
        * S8Z24 stencil reads.
        */
-      if (rb->_ActualFormat == GL_DEPTH_COMPONENT24) {
-	 switch (tiling) {
-	 case I915_TILING_NONE:
-	 default:
-	    intelInitDepthPointers_z24(rb);
-	    break;
-	 case I915_TILING_X:
-	    intel_XTile_InitDepthPointers_z24(rb);
-	    break;
-	 case I915_TILING_Y:
-	    intel_YTile_InitDepthPointers_z24(rb);
-	    break;
-	 }
-      } else if (rb->_ActualFormat == GL_DEPTH24_STENCIL8_EXT) {
+      if (rb->Format == MESA_FORMAT_Z24_S8) {
 	 switch (tiling) {
 	 case I915_TILING_NONE:
 	 default:
@@ -697,7 +684,7 @@ intel_set_span_functions(struct intel_context *intel,
 	    intel_YTile_InitDepthPointers_z24_s8(rb);
 	    break;
 	 }
-      } else if (rb->_ActualFormat == GL_STENCIL_INDEX8_EXT) {
+      } else if (rb->Format == MESA_FORMAT_S8) {
 	 switch (tiling) {
 	 case I915_TILING_NONE:
 	 default:
diff --git a/src/mesa/drivers/dri/intel/intel_tex_format.c b/src/mesa/drivers/dri/intel/intel_tex_format.c
index eca0f6d5723..a71590d3ef1 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_format.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_format.c
@@ -153,7 +153,7 @@ intelChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
 #endif
    case GL_DEPTH_STENCIL_EXT:
    case GL_DEPTH24_STENCIL8_EXT:
-      return MESA_FORMAT_S8_Z24;
+      return MESA_FORMAT_Z24_S8;
 
 #ifndef I915
    case GL_SRGB_EXT:
diff --git a/src/mesa/drivers/dri/r200/r200_state_init.c b/src/mesa/drivers/dri/r200/r200_state_init.c
index 7697306d889..68bfeea701a 100644
--- a/src/mesa/drivers/dri/r200/r200_state_init.c
+++ b/src/mesa/drivers/dri/r200/r200_state_init.c
@@ -529,16 +529,18 @@ static void ctx_emit_cs(GLcontext *ctx, struct radeon_state_atom *atom)
    atom->cmd[CTX_RB3D_CNTL] &= ~(0xf << 10);
    if (rrb->cpp == 4)
 	atom->cmd[CTX_RB3D_CNTL] |= RADEON_COLOR_FORMAT_ARGB8888;
-   else switch (rrb->base._ActualFormat) {
-   case GL_RGB5:
+   else switch (rrb->base.Format) {
+   case MESA_FORMAT_RGB565:
 	atom->cmd[CTX_RB3D_CNTL] |= RADEON_COLOR_FORMAT_RGB565;
 	break;
-   case GL_RGBA4:
+   case MESA_FORMAT_ARGB4444:
 	atom->cmd[CTX_RB3D_CNTL] |= RADEON_COLOR_FORMAT_ARGB4444;
 	break;
-   case GL_RGB5_A1:
+   case MESA_FORMAT_ARGB1555:
 	atom->cmd[CTX_RB3D_CNTL] |= RADEON_COLOR_FORMAT_ARGB1555;
 	break;
+   default:
+	_mesa_problem(ctx, "Unexpected format in ctx_emit_cs");
    }
 
    cbpitch = (rrb->pitch / rrb->cpp);
diff --git a/src/mesa/drivers/dri/r300/r300_cmdbuf.c b/src/mesa/drivers/dri/r300/r300_cmdbuf.c
index da5b7ba642f..1e2a54f6342 100644
--- a/src/mesa/drivers/dri/r300/r300_cmdbuf.c
+++ b/src/mesa/drivers/dri/r300/r300_cmdbuf.c
@@ -279,16 +279,18 @@ static void emit_cb_offset(GLcontext *ctx, struct radeon_state_atom * atom)
 	cbpitch = (rrb->pitch / rrb->cpp);
 	if (rrb->cpp == 4)
 		cbpitch |= R300_COLOR_FORMAT_ARGB8888;
-	else switch (rrb->base._ActualFormat) {
-	case GL_RGB5:
+	else switch (rrb->base.Format) {
+        case MESA_FORMAT_RGB565:
 		cbpitch |= R300_COLOR_FORMAT_RGB565;
 		break;
-	case GL_RGBA4:
+        case MESA_FORMAT_ARGB4444:
 		cbpitch |= R300_COLOR_FORMAT_ARGB4444;
 		break;
-	case GL_RGB5_A1:
+	case MESA_FORMAT_ARGB1555:
 		cbpitch |= R300_COLOR_FORMAT_ARGB1555;
 		break;
+	default:
+		_mesa_problem(ctx, "unexpected format in emit_cb_offset()");
 	}
 
 	if (rrb->bo->flags & RADEON_BO_FLAGS_MACRO_TILE)
diff --git a/src/mesa/drivers/dri/radeon/radeon_common_context.c b/src/mesa/drivers/dri/radeon/radeon_common_context.c
index 6b9b1e3c5e4..fe99644907f 100644
--- a/src/mesa/drivers/dri/radeon/radeon_common_context.c
+++ b/src/mesa/drivers/dri/radeon/radeon_common_context.c
@@ -496,19 +496,7 @@ radeon_make_renderbuffer_current(radeonContextPtr radeon,
 static unsigned
 radeon_bits_per_pixel(const struct radeon_renderbuffer *rb)
 {
-   switch (rb->base._ActualFormat) {
-   case GL_RGB5:
-   case GL_DEPTH_COMPONENT16:
-      return 16;
-   case GL_RGB8:
-   case GL_RGBA8:
-   case GL_DEPTH_COMPONENT24:
-   case GL_DEPTH24_STENCIL8_EXT:
-   case GL_STENCIL_INDEX8_EXT:
-      return 32;
-   default:
-      return 0;
-   }
+   return _mesa_get_format_bytes(rb->base.Format) * 8; 
 }
 
 void
diff --git a/src/mesa/drivers/dri/radeon/radeon_fbo.c b/src/mesa/drivers/dri/radeon/radeon_fbo.c
index 3f4f382d6c6..796dd1b4237 100644
--- a/src/mesa/drivers/dri/radeon/radeon_fbo.c
+++ b/src/mesa/drivers/dri/radeon/radeon_fbo.c
@@ -90,11 +90,8 @@ radeon_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    case GL_R3_G3_B2:
    case GL_RGB4:
    case GL_RGB5:
-      rb->_ActualFormat = GL_RGB5;
+      rb->Format = MESA_FORMAT_RGB565;
       rb->DataType = GL_UNSIGNED_BYTE;
-      rb->RedBits = 5;
-      rb->GreenBits = 6;
-      rb->BlueBits = 5;
       cpp = 2;
       break;
    case GL_RGB:
@@ -102,12 +99,8 @@ radeon_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    case GL_RGB10:
    case GL_RGB12:
    case GL_RGB16:
-      rb->_ActualFormat = GL_RGB8;
+      rb->Format = MESA_FORMAT_ARGB8888;
       rb->DataType = GL_UNSIGNED_BYTE;
-      rb->RedBits = 8;
-      rb->GreenBits = 8;
-      rb->BlueBits = 8;
-      rb->AlphaBits = 0;
       cpp = 4;
       break;
    case GL_RGBA:
@@ -118,12 +111,8 @@ radeon_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    case GL_RGB10_A2:
    case GL_RGBA12:
    case GL_RGBA16:
-      rb->_ActualFormat = GL_RGBA8;
+      rb->Format = MESA_FORMAT_ARGB8888;
       rb->DataType = GL_UNSIGNED_BYTE;
-      rb->RedBits = 8;
-      rb->GreenBits = 8;
-      rb->BlueBits = 8;
-      rb->AlphaBits = 8;
       cpp = 4;
       break;
    case GL_STENCIL_INDEX:
@@ -132,31 +121,26 @@ radeon_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    case GL_STENCIL_INDEX8_EXT:
    case GL_STENCIL_INDEX16_EXT:
       /* alloc a depth+stencil buffer */
-      rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
+      rb->Format = MESA_FORMAT_Z24_S8;
       rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
-      rb->StencilBits = 8;
       cpp = 4;
       break;
    case GL_DEPTH_COMPONENT16:
-      rb->_ActualFormat = GL_DEPTH_COMPONENT16;
+      rb->Format = MESA_FORMAT_Z16;
       rb->DataType = GL_UNSIGNED_SHORT;
-      rb->DepthBits = 16;
       cpp = 2;
       break;
    case GL_DEPTH_COMPONENT:
    case GL_DEPTH_COMPONENT24:
    case GL_DEPTH_COMPONENT32:
-      rb->_ActualFormat = GL_DEPTH_COMPONENT24;
+      rb->Format = MESA_FORMAT_Z32;
       rb->DataType = GL_UNSIGNED_INT;
-      rb->DepthBits = 24;
       cpp = 4;
       break;
    case GL_DEPTH_STENCIL_EXT:
    case GL_DEPTH24_STENCIL8_EXT:
-      rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
+      rb->Format = MESA_FORMAT_Z24_S8;
       rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
-      rb->DepthBits = 24;
-      rb->StencilBits = 8;
       cpp = 4;
       break;
    default:
@@ -165,6 +149,8 @@ radeon_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
       return GL_FALSE;
    }
 
+  rb->_BaseFormat = _mesa_base_fbo_format(ctx, internalFormat);
+
   if (ctx->Driver.Flush)
 	  ctx->Driver.Flush(ctx); /* +r6/r7 */
 
@@ -212,7 +198,7 @@ radeon_alloc_window_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
    ASSERT(rb->Name == 0);
    rb->Width = width;
    rb->Height = height;
-   rb->_ActualFormat = internalFormat;
+   rb->InternalFormat = internalFormat;
 
    return GL_TRUE;
 }
@@ -269,55 +255,32 @@ radeon_create_renderbuffer(GLenum format, __DRIdrawablePrivate *driDrawPriv)
     /* XXX format junk */
     switch (format) {
 	case GL_RGB5:
-	    rrb->base._ActualFormat = GL_RGB5;
-	    rrb->base._BaseFormat = GL_RGBA;
-	    rrb->base.RedBits = 5;
-	    rrb->base.GreenBits = 6;
-	    rrb->base.BlueBits = 5;
 	    rrb->base.DataType = GL_UNSIGNED_BYTE;
+            rrb->base._BaseFormat = GL_RGB;
 	    break;
 	case GL_RGB8:
-	    rrb->base._ActualFormat = GL_RGB8;
-	    rrb->base._BaseFormat = GL_RGB;
-	    rrb->base.RedBits = 8;
-	    rrb->base.GreenBits = 8;
-	    rrb->base.BlueBits = 8;
-	    rrb->base.AlphaBits = 0;
 	    rrb->base.DataType = GL_UNSIGNED_BYTE;
+            rrb->base._BaseFormat = GL_RGB;
 	    break;
 	case GL_RGBA8:
-	    rrb->base._ActualFormat = GL_RGBA8;
-	    rrb->base._BaseFormat = GL_RGBA;
-	    rrb->base.RedBits = 8;
-	    rrb->base.GreenBits = 8;
-	    rrb->base.BlueBits = 8;
-	    rrb->base.AlphaBits = 8;
 	    rrb->base.DataType = GL_UNSIGNED_BYTE;
+            rrb->base._BaseFormat = GL_RGBA;
 	    break;
 	case GL_STENCIL_INDEX8_EXT:
-	    rrb->base._ActualFormat = GL_STENCIL_INDEX8_EXT;
-	    rrb->base._BaseFormat = GL_STENCIL_INDEX;
-	    rrb->base.StencilBits = 8;
 	    rrb->base.DataType = GL_UNSIGNED_BYTE;
+            rrb->base._BaseFormat = GL_STENCIL_INDEX;
 	    break;
 	case GL_DEPTH_COMPONENT16:
-	    rrb->base._ActualFormat = GL_DEPTH_COMPONENT16;
-	    rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
-	    rrb->base.DepthBits = 16;
 	    rrb->base.DataType = GL_UNSIGNED_SHORT;
+            rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 	    break;
 	case GL_DEPTH_COMPONENT24:
-	    rrb->base._ActualFormat = GL_DEPTH_COMPONENT24;
-	    rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
-	    rrb->base.DepthBits = 24;
 	    rrb->base.DataType = GL_UNSIGNED_INT;
+            rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 	    break;
 	case GL_DEPTH24_STENCIL8_EXT:
-	    rrb->base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
-	    rrb->base._BaseFormat = GL_DEPTH_STENCIL_EXT;
-	    rrb->base.DepthBits = 24;
-	    rrb->base.StencilBits = 8;
 	    rrb->base.DataType = GL_UNSIGNED_INT_24_8_EXT;
+            rrb->base._BaseFormat = GL_STENCIL_INDEX;
 	    break;
 	default:
 	    fprintf(stderr, "%s: Unknown format 0x%04x\n", __FUNCTION__, format);
@@ -390,44 +353,26 @@ radeon_update_wrapper(GLcontext *ctx, struct radeon_renderbuffer *rrb,
 
 restart:
 	if (texImage->TexFormat == MESA_FORMAT_ARGB8888) {
-		rrb->cpp = 4;
-		rrb->base._ActualFormat = GL_RGBA8;
-		rrb->base._BaseFormat = GL_RGBA;
 		rrb->base.DataType = GL_UNSIGNED_BYTE;
 		DBG("Render to RGBA8 texture OK\n");
 	}
 	else if (texImage->TexFormat == MESA_FORMAT_RGB565) {
-		rrb->cpp = 2;
-		rrb->base._ActualFormat = GL_RGB5;
-		rrb->base._BaseFormat = GL_RGB;
 		rrb->base.DataType = GL_UNSIGNED_BYTE;
 		DBG("Render to RGB5 texture OK\n");
 	}
 	else if (texImage->TexFormat == MESA_FORMAT_ARGB1555) {
-		rrb->cpp = 2;
-		rrb->base._ActualFormat = GL_RGB5_A1;
-		rrb->base._BaseFormat = GL_RGBA;
 		rrb->base.DataType = GL_UNSIGNED_BYTE;
 		DBG("Render to ARGB1555 texture OK\n");
 	}
 	else if (texImage->TexFormat == MESA_FORMAT_ARGB4444) {
-		rrb->cpp = 2;
-		rrb->base._ActualFormat = GL_RGBA4;
-		rrb->base._BaseFormat = GL_RGBA;
 		rrb->base.DataType = GL_UNSIGNED_BYTE;
 		DBG("Render to ARGB1555 texture OK\n");
 	}
 	else if (texImage->TexFormat == MESA_FORMAT_Z16) {
-		rrb->cpp = 2;
-		rrb->base._ActualFormat = GL_DEPTH_COMPONENT16;
-		rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 		rrb->base.DataType = GL_UNSIGNED_SHORT;
 		DBG("Render to DEPTH16 texture OK\n");
 	}
 	else if (texImage->TexFormat == MESA_FORMAT_S8_Z24) {
-		rrb->cpp = 4;
-		rrb->base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
-		rrb->base._BaseFormat = GL_DEPTH_STENCIL_EXT;
 		rrb->base.DataType = GL_UNSIGNED_INT_24_8_EXT;
 		DBG("Render to DEPTH_STENCIL texture OK\n");
 	}
@@ -448,16 +393,15 @@ restart:
 	
 	texFormat = texImage->TexFormat;
 
+	rrb->base.Format = texFormat;
+
+        rrb->cpp = _mesa_get_format_bytes(texFormat);
 	rrb->pitch = texImage->Width * rrb->cpp;
-	rrb->base.InternalFormat = rrb->base._ActualFormat;
+	rrb->base.InternalFormat = texImage->InternalFormat;
+        rrb->base._BaseFormat = _mesa_base_fbo_format(ctx, rrb->base.InternalFormat);
+
 	rrb->base.Width = texImage->Width;
 	rrb->base.Height = texImage->Height;
-	rrb->base.RedBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE);
-	rrb->base.GreenBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE);
-	rrb->base.BlueBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_BLUE_SIZE);
-	rrb->base.AlphaBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_ALPHA_SIZE);
-	rrb->base.DepthBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_DEPTH_SIZE_ARB);
-	rrb->base.StencilBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_STENCIL_SIZE_EXT);
 	
 	rrb->base.Delete = radeon_delete_renderbuffer;
 	rrb->base.AllocStorage = radeon_nop_alloc_storage;
diff --git a/src/mesa/drivers/dri/radeon/radeon_span.c b/src/mesa/drivers/dri/radeon/radeon_span.c
index 0c49c3713af..055f77a24b9 100644
--- a/src/mesa/drivers/dri/radeon/radeon_span.c
+++ b/src/mesa/drivers/dri/radeon/radeon_span.c
@@ -864,25 +864,25 @@ void radeonInitSpanFuncs(GLcontext * ctx)
  */
 static void radeonSetSpanFunctions(struct radeon_renderbuffer *rrb)
 {
-	if (rrb->base._ActualFormat == GL_RGB5) {
+	if (rrb->base.Format == MESA_FORMAT_RGB565) {
 		radeonInitPointers_RGB565(&rrb->base);
-	} else if (rrb->base._ActualFormat == GL_RGB8) {
+	} else if (rrb->base.Format == MESA_FORMAT_RGBA8888) { /* XXX */
 		radeonInitPointers_xRGB8888(&rrb->base);
-	} else if (rrb->base._ActualFormat == GL_RGBA8) {
+	} else if (rrb->base.Format == MESA_FORMAT_RGBA8888) {
 		radeonInitPointers_ARGB8888(&rrb->base);
-	} else if (rrb->base._ActualFormat == GL_RGBA4) {
+	} else if (rrb->base.Format == MESA_FORMAT_ARGB4444) {
 		radeonInitPointers_ARGB4444(&rrb->base);
-	} else if (rrb->base._ActualFormat == GL_RGB5_A1) {
+	} else if (rrb->base.Format == MESA_FORMAT_ARGB1555) {
 		radeonInitPointers_ARGB1555(&rrb->base);
-	} else if (rrb->base._ActualFormat == GL_DEPTH_COMPONENT16) {
+	} else if (rrb->base.Format == MESA_FORMAT_Z16) {
 		radeonInitDepthPointers_z16(&rrb->base);
-	} else if (rrb->base._ActualFormat == GL_DEPTH_COMPONENT24) {
+	} else if (rrb->base.Format == GL_DEPTH_COMPONENT32) { /* XXX */
 		radeonInitDepthPointers_z24(&rrb->base);
-	} else if (rrb->base._ActualFormat == GL_DEPTH24_STENCIL8_EXT) {
+	} else if (rrb->base.Format == MESA_FORMAT_Z24_S8) {
 		radeonInitDepthPointers_z24_s8(&rrb->base);
-	} else if (rrb->base._ActualFormat == GL_STENCIL_INDEX8_EXT) {
+	} else if (rrb->base.Format == MESA_FORMAT_S8) {
 		radeonInitStencilPointers_z24_s8(&rrb->base);
 	} else {
-		fprintf(stderr, "radeonSetSpanFunctions: bad actual format: 0x%04X\n", rrb->base._ActualFormat);
+		fprintf(stderr, "radeonSetSpanFunctions: bad actual format: 0x%04X\n", rrb->base.Format);
 	}
 }
diff --git a/src/mesa/drivers/dri/radeon/radeon_state_init.c b/src/mesa/drivers/dri/radeon/radeon_state_init.c
index f3ad0dd17af..2d19220d8af 100644
--- a/src/mesa/drivers/dri/radeon/radeon_state_init.c
+++ b/src/mesa/drivers/dri/radeon/radeon_state_init.c
@@ -440,16 +440,18 @@ static void ctx_emit_cs(GLcontext *ctx, struct radeon_state_atom *atom)
    atom->cmd[CTX_RB3D_CNTL] &= ~(0xf << 10);
    if (rrb->cpp == 4)
 	atom->cmd[CTX_RB3D_CNTL] |= RADEON_COLOR_FORMAT_ARGB8888;
-   else switch (rrb->base._ActualFormat) {
-   case GL_RGB5:
+   else switch (rrb->base.Format) {
+   case MESA_FORMAT_RGB565:
 	atom->cmd[CTX_RB3D_CNTL] |= RADEON_COLOR_FORMAT_RGB565;
 	break;
-   case GL_RGBA4:
+   case MESA_FORMAT_ARGB4444:
 	atom->cmd[CTX_RB3D_CNTL] |= RADEON_COLOR_FORMAT_ARGB4444;
 	break;
-   case GL_RGB5_A1:
+   case MESA_FORMAT_ARGB1555:
 	atom->cmd[CTX_RB3D_CNTL] |= RADEON_COLOR_FORMAT_ARGB1555;
 	break;
+   default:
+	_mesa_problem(ctx, "unexpected format in ctx_emit_cs()");
    }
 
    cbpitch = (rrb->pitch / rrb->cpp);
diff --git a/src/mesa/drivers/dri/sis/sis_dd.c b/src/mesa/drivers/dri/sis/sis_dd.c
index bddc4a9285c..217d77557f3 100644
--- a/src/mesa/drivers/dri/sis/sis_dd.c
+++ b/src/mesa/drivers/dri/sis/sis_dd.c
@@ -41,6 +41,7 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "sis_tris.h"
 
 #include "swrast/swrast.h"
+#include "main/formats.h"
 #include "main/framebuffer.h"
 #include "main/renderbuffer.h"
 
@@ -142,25 +143,25 @@ sisInitRenderbuffer(struct gl_renderbuffer *rb, GLenum format)
 
    if (format == GL_RGBA) {
       /* Color */
-      rb->_BaseFormat = GL_RGBA;
+      rb->Format = MESA_FORMAT_ARGB8888;
       rb->DataType = GL_UNSIGNED_BYTE;
    }
    else if (format == GL_DEPTH_COMPONENT16) {
       /* Depth */
-      rb->_BaseFormat = GL_DEPTH_COMPONENT;
       /* we always Get/Put 32-bit Z values */
+      rb->Format = MESA_FORMAT_Z16;
       rb->DataType = GL_UNSIGNED_INT;
    }
    else if (format == GL_DEPTH_COMPONENT24) {
       /* Depth */
-      rb->_BaseFormat = GL_DEPTH_COMPONENT;
       /* we always Get/Put 32-bit Z values */
+      rb->Format = MESA_FORMAT_Z32;
       rb->DataType = GL_UNSIGNED_INT;
    }
    else {
       /* Stencil */
       ASSERT(format == GL_STENCIL_INDEX8_EXT);
-      rb->_BaseFormat = GL_STENCIL_INDEX;
+      rb->Format = MESA_FORMAT_S8;
       rb->DataType = GL_UNSIGNED_BYTE;
    }
 
diff --git a/src/mesa/drivers/dri/swrast/swrast.c b/src/mesa/drivers/dri/swrast/swrast.c
index f4947daa063..a8d1a95bbe6 100644
--- a/src/mesa/drivers/dri/swrast/swrast.c
+++ b/src/mesa/drivers/dri/swrast/swrast.c
@@ -33,6 +33,7 @@
 
 #include "main/context.h"
 #include "main/extensions.h"
+#include "main/formats.h"
 #include "main/framebuffer.h"
 #include "main/imports.h"
 #include "main/renderbuffer.h"
@@ -378,50 +379,38 @@ swrast_new_renderbuffer(const GLvisual *visual, GLboolean front)
 
     switch (pixel_format) {
     case PF_A8R8G8B8:
+	xrb->Base.Format = MESA_FORMAT_ARGB8888;
 	xrb->Base.InternalFormat = GL_RGBA;
 	xrb->Base._BaseFormat = GL_RGBA;
 	xrb->Base.DataType = GL_UNSIGNED_BYTE;
-	xrb->Base.RedBits   = 8 * sizeof(GLubyte);
-	xrb->Base.GreenBits = 8 * sizeof(GLubyte);
-	xrb->Base.BlueBits  = 8 * sizeof(GLubyte);
-	xrb->Base.AlphaBits = 8 * sizeof(GLubyte);
 	xrb->bpp = 32;
 	break;
     case PF_X8R8G8B8:
+	xrb->Base.Format = MESA_FORMAT_ARGB8888; /* XXX */
 	xrb->Base.InternalFormat = GL_RGB;
 	xrb->Base._BaseFormat = GL_RGB;
 	xrb->Base.DataType = GL_UNSIGNED_BYTE;
-	xrb->Base.RedBits   = 8 * sizeof(GLubyte);
-	xrb->Base.GreenBits = 8 * sizeof(GLubyte);
-	xrb->Base.BlueBits  = 8 * sizeof(GLubyte);
-	xrb->Base.AlphaBits = 0;
 	xrb->bpp = 32;
 	break;
     case PF_R5G6B5:
+	xrb->Base.Format = MESA_FORMAT_RGB565;
 	xrb->Base.InternalFormat = GL_RGB;
 	xrb->Base._BaseFormat = GL_RGB;
 	xrb->Base.DataType = GL_UNSIGNED_BYTE;
-	xrb->Base.RedBits   = 5 * sizeof(GLubyte);
-	xrb->Base.GreenBits = 6 * sizeof(GLubyte);
-	xrb->Base.BlueBits  = 5 * sizeof(GLubyte);
-	xrb->Base.AlphaBits = 0;
 	xrb->bpp = 16;
 	break;
     case PF_R3G3B2:
+	xrb->Base.Format = MESA_FORMAT_RGB332;
 	xrb->Base.InternalFormat = GL_RGB;
 	xrb->Base._BaseFormat = GL_RGB;
 	xrb->Base.DataType = GL_UNSIGNED_BYTE;
-	xrb->Base.RedBits   = 3 * sizeof(GLubyte);
-	xrb->Base.GreenBits = 3 * sizeof(GLubyte);
-	xrb->Base.BlueBits  = 2 * sizeof(GLubyte);
-	xrb->Base.AlphaBits = 0;
 	xrb->bpp = 8;
 	break;
     case PF_CI8:
+	xrb->Base.Format = MESA_FORMAT_CI8;
 	xrb->Base.InternalFormat = GL_COLOR_INDEX8_EXT;
 	xrb->Base._BaseFormat = GL_COLOR_INDEX;
 	xrb->Base.DataType = GL_UNSIGNED_BYTE;
-	xrb->Base.IndexBits = 8 * sizeof(GLubyte);
 	xrb->bpp = 8;
 	break;
     default:
diff --git a/src/mesa/drivers/dri/unichrome/via_context.c b/src/mesa/drivers/dri/unichrome/via_context.c
index 6eb19ac0790..e7b6b030d16 100644
--- a/src/mesa/drivers/dri/unichrome/via_context.c
+++ b/src/mesa/drivers/dri/unichrome/via_context.c
@@ -32,6 +32,7 @@
 
 #include "main/glheader.h"
 #include "main/context.h"
+#include "main/formats.h"
 #include "main/matrix.h"
 #include "main/state.h"
 #include "main/simple_list.h"
@@ -163,24 +164,28 @@ viaInitRenderbuffer(struct via_renderbuffer *vrb, GLenum format,
    if (format == GL_RGBA) {
       /* Color */
       rb->_BaseFormat = GL_RGBA;
+      rb->Format = MESA_FORMAT_ARGB8888;
       rb->DataType = GL_UNSIGNED_BYTE;
    }
    else if (format == GL_DEPTH_COMPONENT16) {
       /* Depth */
       rb->_BaseFormat = GL_DEPTH_COMPONENT;
       /* we always Get/Put 32-bit Z values */
+      rb->Format = MESA_FORMAT_Z16;
       rb->DataType = GL_UNSIGNED_INT;
    }
    else if (format == GL_DEPTH_COMPONENT24) {
       /* Depth */
       rb->_BaseFormat = GL_DEPTH_COMPONENT;
       /* we always Get/Put 32-bit Z values */
+      rb->Format = MESA_FORMAT_Z32;
       rb->DataType = GL_UNSIGNED_INT;
    }
    else {
       /* Stencil */
       ASSERT(format == GL_STENCIL_INDEX8_EXT);
       rb->_BaseFormat = GL_STENCIL_INDEX;
+      rb->Format = MESA_FORMAT_S8;
       rb->DataType = GL_UNSIGNED_BYTE;
    }