The i965 driver advertises GL_ARB_texture_float and GL_ARB_texture_rg support but the ctx->TextureFormatSupported[] table entries for MESA_FORMAT_R_FLOAT32 and MESA_FORMAT_RGBA_FLOAT32 are false on gen 4 hardware. So the case for GL_R32F would fail and we'd print an implementation error.
This patch adds more Mesa tex format options for GL_R32F and other R/G formats so we fall back to 16-bit formats when 32-bit formats aren't available. Eric made the same fix in commit 6216a5b4 for the non R/G formats. This should fix https://bugs.freedesktop.org/show_bug.cgi?id=44039 NOTE: This is a candidate for the 8.0 branch. --- src/mesa/main/texformat.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c index 7e60541..2f680d9 100644 --- a/src/mesa/main/texformat.c +++ b/src/mesa/main/texformat.c @@ -788,19 +788,25 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat, RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); + RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; case GL_R32F: RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); + RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16); + RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; case GL_RG16F: RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); + RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; case GL_RG32F: RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); + RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16); + RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; default: -- 1.7.3.4 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
