Module: Mesa Branch: master Commit: 844f8268e1cde496a854a72e080558f3c5700583 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=844f8268e1cde496a854a72e080558f3c5700583
Author: Marek Olšák <marek.ol...@amd.com> Date: Tue Oct 4 23:29:27 2016 +0200 gallium/radeon/winsyses: set reasonable max_alloc_size which is returned for GL_MAX_TEXTURE_BUFFER_SIZE. It doesn't have any other use at the moment. Bigger allocations are not rejected. This fixes GL45-CTS.texture_buffer.texture_buffer_max_size on Bonaire. Reviewed-by: Nicolai Hähnle <nicolai.haeh...@amd.com> --- src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c | 4 ++-- src/gallium/winsys/radeon/drm/radeon_drm_winsys.c | 4 +++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c index c28e1ca..98d72bd 100644 --- a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c +++ b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c @@ -318,8 +318,8 @@ static bool do_winsys_init(struct amdgpu_winsys *ws, int fd) /* Set hardware information. */ ws->info.gart_size = gtt.heap_size; ws->info.vram_size = vram.heap_size; - /* TODO: the kernel reports vram/gart.max_allocation == 251 MB (bug?) */ - ws->info.max_alloc_size = MAX2(ws->info.vram_size, ws->info.gart_size); + /* The kernel can split large buffers, so we can do large allocations. */ + ws->info.max_alloc_size = MAX2(ws->info.vram_size, ws->info.gart_size) * 0.9; /* convert the shader clock from KHz to MHz */ ws->info.max_shader_clock = ws->amdinfo.max_engine_clk / 1000; ws->info.max_se = ws->amdinfo.num_shader_engines; diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c index c7ceee2..70f061c 100644 --- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c +++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c @@ -373,7 +373,9 @@ static bool do_winsys_init(struct radeon_drm_winsys *ws) ws->info.gart_size = gem_info.gart_size; ws->info.vram_size = gem_info.vram_size; - ws->info.max_alloc_size = MAX2(ws->info.vram_size, ws->info.gart_size); + /* Radeon allocates all buffers as contigous, which makes large allocations + * unlikely to succeed. */ + ws->info.max_alloc_size = MAX2(ws->info.vram_size, ws->info.gart_size) * 0.7; if (ws->info.drm_minor < 40) ws->info.max_alloc_size = MIN2(ws->info.max_alloc_size, 256*1024*1024); _______________________________________________ mesa-commit mailing list mesa-commit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-commit