This series builds on work from Frank Henigman to optimize the process of uploading a texture to the GPU. This series adds support for MESA_XRGB_8888 and full miptrees where were found to be common activities in the Smokin' Guns game. The issue was found while profiling the app but that part is not benchmarked. Smokin-Guns uses mipmap textures with an internal format of GL_RGB (MESA_XRGB_8888 in the driver).
These changes need a performance tool to run against to show how they improve execution performance for specific texture formats. Using this benchmark I've measured the following improvement on my Ivybridge Intel(R) Xeon(R) CPU E3-1225 V2 @ 3.20GHz. Using 1024x1024, RGBA 8888 source, mipmap internal-format Before (MB/sec) After XRGB (MB/sec) After mip (MB/sec) GL_RGBA 628.15 627.15 615.90 GL_RGB 265.95 456.35 611.53 Test shows similar pattern for 512x512 and 256x256. Benchmark has been sent to mesa-dev list: teximage_enh Courtney Goeltzenleuchter (2): i965: add XRGB to tiled_memcpy i965: Enhance tiled_memcpy to support all levels src/mesa/drivers/dri/i965/intel_tex_subimage.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) -- 1.8.1.2 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
