intel: update intel_create_renderbuffer(format), add XRGB support

Pass a gl_format to intel_create_renderbuffer() instead of GLenum.
Add cases for MESA_FORMAT_XRGB8888 textures and renderbuffers.
However, we don't yet create any renderbuffers or textures with that
format.  It seems the default alpha value is zero instead of one.
Need to investigate that first.

7 files changed, 44 insertions, 36 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_blit.c b/src/mesa/drivers/dri/intel/intel_blit.c
index 55d97a0f76a..817223da41d 100644
--- a/src/mesa/drivers/dri/intel/intel_blit.c
+++ b/src/mesa/drivers/dri/intel/intel_blit.c
@@ -498,6 +498,7 @@ intelClearWithBlit(GLcontext *ctx, GLbitfield mask)
 
 		  switch (irb->texformat) {
 		  case MESA_FORMAT_ARGB8888:
+		  case MESA_FORMAT_XRGB8888:
 		     clearVal = intel->ClearColor8888;
 		     break;
 		  case MESA_FORMAT_RGB565:
diff --git a/src/mesa/drivers/dri/intel/intel_fbo.c b/src/mesa/drivers/dri/intel/intel_fbo.c
index d006389f5ab..9c780d40ccd 100644
--- a/src/mesa/drivers/dri/intel/intel_fbo.c
+++ b/src/mesa/drivers/dri/intel/intel_fbo.c
@@ -292,7 +292,7 @@ intel_renderbuffer_set_region(struct intel_renderbuffer *rb,
  * not a user-created renderbuffer.
  */
 struct intel_renderbuffer *
-intel_create_renderbuffer(GLenum intFormat)
+intel_create_renderbuffer(gl_format format)
 {
    GET_CURRENT_CONTEXT(ctx);
 
@@ -308,48 +308,30 @@ intel_create_renderbuffer(GLenum intFormat)
    _mesa_init_renderbuffer(&irb->Base, name);
    irb->Base.ClassID = INTEL_RB_CLASS;
 
-   switch (intFormat) {
-   case GL_RGB5:
-      irb->Base.Format = MESA_FORMAT_RGB565;
+   switch (format) {
+   case 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.Format = MESA_FORMAT_ARGB8888; /* XXX: NEED XRGB8888 */
+   case MESA_FORMAT_XRGB8888:
       irb->Base._BaseFormat = GL_RGB;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
-      irb->texformat = MESA_FORMAT_ARGB8888; /* XXX: NEED XRGB8888 */
       break;
-   case GL_RGBA8:
-      irb->Base.Format = MESA_FORMAT_ARGB8888;
+   case MESA_FORMAT_ARGB8888:
       irb->Base._BaseFormat = GL_RGBA;
       irb->Base.DataType = GL_UNSIGNED_BYTE;
-      irb->texformat = MESA_FORMAT_ARGB8888;
-      break;
-   case GL_STENCIL_INDEX8_EXT:
-      irb->Base.Format = MESA_FORMAT_S8_Z24;
-      irb->Base._BaseFormat = GL_STENCIL_INDEX;
-      irb->Base.DataType = GL_UNSIGNED_BYTE;
-      irb->texformat = MESA_FORMAT_S8_Z24;
       break;
-   case GL_DEPTH_COMPONENT16:
-      irb->Base.Format = MESA_FORMAT_Z16;
+   case MESA_FORMAT_Z16:
       irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
       irb->Base.DataType = GL_UNSIGNED_SHORT;
-      irb->texformat = MESA_FORMAT_Z16;
       break;
-   case GL_DEPTH_COMPONENT24:
-      irb->Base.Format = MESA_FORMAT_S8_Z24;
+   case MESA_FORMAT_X8_Z24:
       irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
       irb->Base.DataType = GL_UNSIGNED_INT;
-      irb->texformat = MESA_FORMAT_S8_Z24;
       break;
-   case GL_DEPTH24_STENCIL8_EXT:
-      irb->Base.Format = MESA_FORMAT_S8_Z24;
+   case MESA_FORMAT_S8_Z24:
       irb->Base._BaseFormat = GL_DEPTH_STENCIL;
       irb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
-      irb->texformat = MESA_FORMAT_S8_Z24;
       break;
    default:
       _mesa_problem(NULL,
@@ -358,7 +340,10 @@ intel_create_renderbuffer(GLenum intFormat)
       return NULL;
    }
 
-   irb->Base.InternalFormat = intFormat;
+   assert(irb->Base._BaseFormat == _mesa_get_format_base_format(format));
+   irb->Base.Format = format;
+   irb->Base.InternalFormat = irb->Base._BaseFormat;
+   irb->texformat = format;
 
    /* intel-specific methods */
    irb->Base.Delete = intel_delete_renderbuffer;
@@ -442,6 +427,10 @@ intel_update_wrapper(GLcontext *ctx, struct intel_renderbuffer *irb,
       irb->Base.DataType = GL_UNSIGNED_BYTE;
       DBG("Render to RGBA8 texture OK\n");
    }
+   else if (texImage->TexFormat == MESA_FORMAT_XRGB8888) {
+      irb->Base.DataType = GL_UNSIGNED_BYTE;
+      DBG("Render to XGBA8 texture OK\n");
+   }
    else if (texImage->TexFormat == MESA_FORMAT_RGB565) {
       irb->Base.DataType = GL_UNSIGNED_BYTE;
       DBG("Render to RGB5 texture OK\n");
@@ -644,6 +633,7 @@ intel_validate_framebuffer(GLcontext *ctx, struct gl_framebuffer *fb)
 
       switch (irb->texformat) {
       case MESA_FORMAT_ARGB8888:
+      case MESA_FORMAT_XRGB8888:
       case MESA_FORMAT_RGB565:
       case MESA_FORMAT_ARGB1555:
       case MESA_FORMAT_ARGB4444:
diff --git a/src/mesa/drivers/dri/intel/intel_fbo.h b/src/mesa/drivers/dri/intel/intel_fbo.h
index e0584e3494b..50a8a959858 100644
--- a/src/mesa/drivers/dri/intel/intel_fbo.h
+++ b/src/mesa/drivers/dri/intel/intel_fbo.h
@@ -115,7 +115,7 @@ intel_renderbuffer_set_region(struct intel_renderbuffer *irb,
 
 
 extern struct intel_renderbuffer *
-intel_create_renderbuffer(GLenum intFormat);
+intel_create_renderbuffer(gl_format format);
 
 
 extern void
diff --git a/src/mesa/drivers/dri/intel/intel_pixel_draw.c b/src/mesa/drivers/dri/intel/intel_pixel_draw.c
index 5ffa847fd4a..9b382e36225 100644
--- a/src/mesa/drivers/dri/intel/intel_pixel_draw.c
+++ b/src/mesa/drivers/dri/intel/intel_pixel_draw.c
@@ -169,7 +169,7 @@ intel_stencil_drawpixels(GLcontext * ctx,
     * buffer.
     */
    depth_irb = intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_DEPTH);
-   irb = intel_create_renderbuffer(GL_RGBA8);
+   irb = intel_create_renderbuffer(MESA_FORMAT_ARGB8888);
    rb = &irb->Base;
    irb->Base.Width = depth_irb->Base.Width;
    irb->Base.Height = depth_irb->Base.Height;
diff --git a/src/mesa/drivers/dri/intel/intel_screen.c b/src/mesa/drivers/dri/intel/intel_screen.c
index 41342ddcae9..62c322b4ed4 100644
--- a/src/mesa/drivers/dri/intel/intel_screen.c
+++ b/src/mesa/drivers/dri/intel/intel_screen.c
@@ -349,7 +349,7 @@ intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
    else {
       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
                              mesaVis->depthBits != 24);
-      GLenum rgbFormat;
+      gl_format rgbFormat;
 
       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 
@@ -359,11 +359,11 @@ intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 
       if (mesaVis->redBits == 5)
-	 rgbFormat = GL_RGB5;
+	 rgbFormat = MESA_FORMAT_RGB565;
       else if (mesaVis->alphaBits == 0)
-	 rgbFormat = GL_RGB8;
+	 rgbFormat = MESA_FORMAT_ARGB8888; /* XXX change to XRGB someday */
       else
-	 rgbFormat = GL_RGBA8;
+	 rgbFormat = MESA_FORMAT_ARGB8888;
 
       /* setup the hardware-based renderbuffers */
       intel_fb->color_rb[0] = intel_create_renderbuffer(rgbFormat);
@@ -382,7 +382,7 @@ intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 	 if (mesaVis->stencilBits == 8) {
 	    /* combined depth/stencil buffer */
 	    struct intel_renderbuffer *depthStencilRb
-	       = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT);
+	       = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 	    /* note: bind RB to two attachment points */
 	    _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 				   &depthStencilRb->Base);
@@ -390,7 +390,7 @@ intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 				   &depthStencilRb->Base);
 	 } else {
 	    struct intel_renderbuffer *depthRb
-	       = intel_create_renderbuffer(GL_DEPTH_COMPONENT24);
+	       = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 	    _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 				   &depthRb->Base);
 	 }
@@ -398,7 +398,7 @@ intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
       else if (mesaVis->depthBits == 16) {
          /* just 16-bit depth buffer, no hw stencil */
          struct intel_renderbuffer *depthRb
-	    = intel_create_renderbuffer(GL_DEPTH_COMPONENT16);
+	    = intel_create_renderbuffer(MESA_FORMAT_Z16);
          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
       }
 
diff --git a/src/mesa/drivers/dri/intel/intel_span.c b/src/mesa/drivers/dri/intel/intel_span.c
index a36c077fbd4..b0484a99591 100644
--- a/src/mesa/drivers/dri/intel/intel_span.c
+++ b/src/mesa/drivers/dri/intel/intel_span.c
@@ -651,8 +651,23 @@ intel_set_span_functions(struct intel_context *intel,
 	 break;
       }
       break;
+   case MESA_FORMAT_XRGB8888:
+      switch (tiling) {
+      case I915_TILING_NONE:
+      default:
+         intelInitPointers_xRGB8888(rb);
+         break;
+      case I915_TILING_X:
+         intel_XTile_InitPointers_xRGB8888(rb);
+         break;
+      case I915_TILING_Y:
+         intel_YTile_InitPointers_xRGB8888(rb);
+         break;
+      }
+      break;
    case MESA_FORMAT_ARGB8888:
       if (0 /*rb->AlphaBits == 0*/) { /* XXX: Need xRGB8888 Mesa format */
+         /* XXX remove this code someday when we enable XRGB surfaces */
 	 /* 8888 RGBx */
 	 switch (tiling) {
 	 case I915_TILING_NONE:
diff --git a/src/mesa/drivers/dri/intel/intel_tex_format.c b/src/mesa/drivers/dri/intel/intel_tex_format.c
index eca0f6d5723..f37a545c7f8 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_format.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_format.c
@@ -50,6 +50,7 @@ intelChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
       if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
          return MESA_FORMAT_RGB565;
       }
+      /* XXX use MESA_FORMAT_XRGB8888 someday */
       return do32bpt ? MESA_FORMAT_ARGB8888 : MESA_FORMAT_RGB565;
 
    case GL_RGBA8:
@@ -69,6 +70,7 @@ intelChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
    case GL_RGB10:
    case GL_RGB12:
    case GL_RGB16:
+      /* XXX use MESA_FORMAT_XRGB8888 someday */
       return MESA_FORMAT_ARGB8888;
 
    case GL_RGB5: