From 4b92379da213c85998643997deef945b6e7fb7a7 Mon Sep 17 00:00:00 2001 From: Ian Romanick Date: Sat, 1 Dec 2012 11:06:48 -0800 Subject: [PATCH] mesa: Disallow deprecated SNORM formats for renderbuffers MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The OpenGL 3.2 core profile spec says: "The following base internal formats from table 3.11 are color-renderable: RED, RG, RGB, and RGBA. The sized internal formats from table 3.12 that have a color-renderable base internal format are also color-renderable. No other formats, including compressed internal formats, are color-renderable." The OpenGL 3.2 compatibility profile spec says (only ALPHA is added): "The following base internal formats from table 3.16 are color-renderable: ALPHA, RED, RG, RGB, and RGBA. The sized internal formats from table 3.17 that have a color-renderable base internal format are also color-renderable. No other formats, including compressed internal formats, are color-renderable." Table 3.12 in the core profile spec and table 3.17 in the compatibility profile spec list SNORM formats as having a base internal format of RED, RG, RGB, or RGBA. From this we infer that they should also be color renderable. The OpenGL ES 3.0 spec says: "An internal format is color-renderable if it is one of the formats from table 3.12 noted as color-renderable or if it is unsized format RGBA or RGB. No other formats, including compressed internal formats, are color-renderable." In the OpenGL ES 3.0 spec, none of the SNORM formats have "color- renderable" marked in table 3.12. The RGB I and UI formats also are not color-renderable in ES3, but we'll save that change for another patch. Both NVIDIA's closed-source driver (version 304.64) and AMD's closed-source driver (Catalyst 12.6 on HD 3650) reject *all* SNORM formats for renderbuffers in OpenGL 3.3 compatibility profiles. v2: Move {RED,RG,RGB,RGBA}_SNORM changes from the this commit to the next commit. Based on suggestions from Ken. Signed-off-by: Ian Romanick Reviewed-by: Marek Olšák Reviewed-by: Kenneth Graunke Reviewed-by: Eric Anholt --- src/mesa/main/fbobject.c | 18 ------------------ 1 file changed, 18 deletions(-) diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c index ce77b9f77b6..0ae4d387a56 100644 --- a/src/mesa/main/fbobject.c +++ b/src/mesa/main/fbobject.c @@ -1207,24 +1207,6 @@ _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat) return ctx->API == API_OPENGL_COMPAT && ctx->Extensions.EXT_texture_snorm && ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0; - case GL_LUMINANCE_SNORM: - case GL_LUMINANCE8_SNORM: - case GL_LUMINANCE16_SNORM: - return ctx->API == API_OPENGL_COMPAT && - ctx->Extensions.EXT_texture_snorm && - ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0; - case GL_LUMINANCE_ALPHA_SNORM: - case GL_LUMINANCE8_ALPHA8_SNORM: - case GL_LUMINANCE16_ALPHA16_SNORM: - return ctx->API == API_OPENGL_COMPAT && - ctx->Extensions.EXT_texture_snorm && - ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0; - case GL_INTENSITY_SNORM: - case GL_INTENSITY8_SNORM: - case GL_INTENSITY16_SNORM: - return ctx->API == API_OPENGL_COMPAT && - ctx->Extensions.EXT_texture_snorm && - ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0; case GL_R16F: case GL_R32F: return ctx->Version >= 30 -- 2.30.2