dri/nouveau: Use the XRGB8888 hardware texture format.

src/mesa/drivers/dri/nouveau/nouveau_texture.c

@@ -108,40 +108,28 @@ nouveau_choose_tex_format(GLcontext *ctx, GLint internalFormat,
 	switch (internalFormat) {
 	case 4:
 	case GL_RGBA:
-	case GL_RGB10_A2:
+	case GL_RGBA2:
+	case GL_RGBA4:
+	case GL_RGBA8:
 	case GL_RGBA12:
 	case GL_RGBA16:
-	case GL_RGBA8:
+	case GL_RGB10_A2:
+		return MESA_FORMAT_ARGB8888;
+	case GL_RGB5_A1:
+		return MESA_FORMAT_ARGB1555;
+
 	case GL_RGB:
 	case GL_RGB8:
 	case GL_RGB10:
 	case GL_RGB12:
 	case GL_RGB16:
-		return MESA_FORMAT_ARGB8888;
-	case GL_RGB5_A1:
-		return MESA_FORMAT_ARGB1555;
-
+		return MESA_FORMAT_XRGB8888;
 	case 3:
 	case GL_R3_G3_B2:
 	case GL_RGB4:
 	case GL_RGB5:
 		return MESA_FORMAT_RGB565;
 
-	case GL_ALPHA:
-	case GL_ALPHA4:
-	case GL_ALPHA12:
-	case GL_ALPHA16:
-	case GL_ALPHA8:
-		return MESA_FORMAT_A8;
-
-	case 1:
-	case GL_LUMINANCE:
-	case GL_LUMINANCE4:
-	case GL_LUMINANCE12:
-	case GL_LUMINANCE16:
-	case GL_LUMINANCE8:
-		return MESA_FORMAT_L8;
-
 	case 2:
 	case GL_LUMINANCE_ALPHA:
 	case GL_LUMINANCE4_ALPHA4:
@@ -152,6 +140,21 @@ nouveau_choose_tex_format(GLcontext *ctx, GLint internalFormat,
 	case GL_LUMINANCE8_ALPHA8:
 		return MESA_FORMAT_ARGB8888;
 
+	case 1:
+	case GL_LUMINANCE:
+	case GL_LUMINANCE4:
+	case GL_LUMINANCE12:
+	case GL_LUMINANCE16:
+	case GL_LUMINANCE8:
+		return MESA_FORMAT_L8;
+
+	case GL_ALPHA:
+	case GL_ALPHA4:
+	case GL_ALPHA12:
+	case GL_ALPHA16:
+	case GL_ALPHA8:
+		return MESA_FORMAT_A8;
+
 	case GL_INTENSITY:
 	case GL_INTENSITY4:
 	case GL_INTENSITY12:

src/mesa/drivers/dri/nouveau/nv04_state_tex.c

@@ -48,6 +48,8 @@ get_tex_format(struct gl_texture_image *ti)
 		return NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_R5G6B5;
 	case MESA_FORMAT_ARGB8888:
 		return NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_A8R8G8B8;
+	case MESA_FORMAT_XRGB8888:
+		return NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_X8R8G8B8;
 	default:
 		assert(0);
 	}

src/mesa/drivers/dri/nouveau/nv10_state_frag.c

@@ -179,6 +179,13 @@ get_input_arg(struct combiner_state *rc, int arg, int flags)
 				return RC_IN_SOURCE(ZERO) |
 					get_input_mapping(rc, operand,
 							  flags ^ INVERT);
+
+		} else if (format == MESA_FORMAT_XRGB8888) {
+			/* Sometimes emulated using ARGB8888. */
+			if (!is_color_operand(operand))
+				return RC_IN_SOURCE(ZERO) |
+					get_input_mapping(rc, operand,
+							  flags ^ INVERT);
 		}
 	}
 

src/mesa/drivers/dri/nouveau/nv10_state_tex.c

@@ -44,6 +44,9 @@ get_tex_format_pot(struct gl_texture_image *ti)
 	case MESA_FORMAT_ARGB8888:
 		return NV10TCL_TX_FORMAT_FORMAT_A8R8G8B8;
 
+	case MESA_FORMAT_XRGB8888:
+		return NV10TCL_TX_FORMAT_FORMAT_X8R8G8B8;
+
 	case MESA_FORMAT_ARGB1555:
 		return NV10TCL_TX_FORMAT_FORMAT_A1R5G5B5;
 
@@ -79,6 +82,7 @@ get_tex_format_rect(struct gl_texture_image *ti)
 		return NV10TCL_TX_FORMAT_FORMAT_R5G6B5_RECT;
 
 	case MESA_FORMAT_ARGB8888:
+	case MESA_FORMAT_XRGB8888:
 		return NV10TCL_TX_FORMAT_FORMAT_A8R8G8B8_RECT;
 
 	case MESA_FORMAT_A8:

src/mesa/drivers/dri/nouveau/nv20_state_tex.c

@@ -45,6 +45,9 @@ get_tex_format_pot(struct gl_texture_image *ti)
 	case MESA_FORMAT_ARGB4444:
 		return NV20TCL_TX_FORMAT_FORMAT_A4R4G4B4;
 
+	case MESA_FORMAT_XRGB8888:
+		return NV20TCL_TX_FORMAT_FORMAT_X8R8G8B8;
+
 	case MESA_FORMAT_RGB565:
 		return NV20TCL_TX_FORMAT_FORMAT_R5G6B5;
 
@@ -67,15 +70,21 @@ static uint32_t
 get_tex_format_rect(struct gl_texture_image *ti)
 {
 	switch (ti->TexFormat) {
+	case MESA_FORMAT_ARGB8888:
+		return NV20TCL_TX_FORMAT_FORMAT_A8R8G8B8_RECT;
+
 	case MESA_FORMAT_ARGB1555:
 		return NV20TCL_TX_FORMAT_FORMAT_A1R5G5B5_RECT;
 
+	case MESA_FORMAT_ARGB4444:
+		return NV20TCL_TX_FORMAT_FORMAT_A4R4G4B4_RECT;
+
+	case MESA_FORMAT_XRGB8888:
+		return NV20TCL_TX_FORMAT_FORMAT_R8G8B8_RECT;
+
 	case MESA_FORMAT_RGB565:
 		return NV20TCL_TX_FORMAT_FORMAT_R5G6B5_RECT;
 
-	case MESA_FORMAT_ARGB8888:
-		return NV20TCL_TX_FORMAT_FORMAT_A8R8G8B8_RECT;
-
 	case MESA_FORMAT_L8:
 		return NV20TCL_TX_FORMAT_FORMAT_L8_RECT;
 
@@ -83,9 +92,6 @@ get_tex_format_rect(struct gl_texture_image *ti)
 	case MESA_FORMAT_I8:
 		return NV20TCL_TX_FORMAT_FORMAT_A8_RECT;
 
-	case MESA_FORMAT_ARGB4444:
-		return NV20TCL_TX_FORMAT_FORMAT_A4R4G4B4_RECT;
-
 	default:
 		assert(0);
 	}