From f80c2874eca86a12517fbe2f4c15287edfb4dc89 Mon Sep 17 00:00:00 2001 From: Christoph Bumiller Date: Mon, 21 May 2012 23:46:11 +0200 Subject: [PATCH] gallium: add st_api feature mask to prevent advertising MS visuals v2: use a define for the maximum sample count v3: also test odd sample counts (r300 supports MS3) While multisample renderbuffers are supported by mesa, MS visuals are not, so we need a way to tell dri/st not to advertise them even if the gallium driver does support multisampled surfaces. Otherwise applications selecting these non-functional visuals would run into trouble ... Reviewed-by: Brian Paul --- src/gallium/include/state_tracker/st_api.h | 16 ++++++++++ .../state_trackers/dri/common/dri_screen.c | 31 ++++++++++++------- src/gallium/state_trackers/vega/vg_manager.c | 1 + src/mesa/state_tracker/st_manager.c | 1 + 4 files changed, 37 insertions(+), 12 deletions(-) diff --git a/src/gallium/include/state_tracker/st_api.h b/src/gallium/include/state_tracker/st_api.h index 3af1dfc6d4d..86ab02d2883 100644 --- a/src/gallium/include/state_tracker/st_api.h +++ b/src/gallium/include/state_tracker/st_api.h @@ -69,6 +69,17 @@ enum st_profile_type #define ST_PROFILE_OPENGL_ES1_MASK (1 << ST_PROFILE_OPENGL_ES1) #define ST_PROFILE_OPENGL_ES2_MASK (1 << ST_PROFILE_OPENGL_ES2) +/** + * Optional API/state tracker features. + */ +enum st_api_feature +{ + ST_API_FEATURE_MS_VISUALS /**< support for multisample visuals */ +}; + +/* for feature_mask in st_api */ +#define ST_API_FEATURE_MS_VISUALS_MASK (1 << ST_API_FEATURE_MS_VISUALS) + /** * New context flags for GL 3.0 and beyond. * @@ -429,6 +440,11 @@ struct st_api */ unsigned profile_mask; + /** + * The supported optional features. Tested with ST_FEATURE_*_MASK. + */ + unsigned feature_mask; + /** * Destroy the API. */ diff --git a/src/gallium/state_trackers/dri/common/dri_screen.c b/src/gallium/state_trackers/dri/common/dri_screen.c index 24efbde2017..406e550e58e 100644 --- a/src/gallium/state_trackers/dri/common/dri_screen.c +++ b/src/gallium/state_trackers/dri/common/dri_screen.c @@ -41,6 +41,8 @@ #include "util/u_debug.h" +#define MSAA_VISUAL_MAX_SAMPLES 8 + PUBLIC const char __driConfigOptions[] = DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE @@ -72,10 +74,10 @@ dri_fill_in_modes(struct dri_screen *screen, __DRIconfig **configs_x8r8g8b8 = NULL; uint8_t depth_bits_array[5]; uint8_t stencil_bits_array[5]; - uint8_t msaa_samples_array[5]; + uint8_t msaa_samples_array[MSAA_VISUAL_MAX_SAMPLES]; unsigned depth_buffer_factor; unsigned back_buffer_factor; - unsigned msaa_samples_factor; + unsigned msaa_samples_factor, msaa_samples_max; unsigned i; struct pipe_screen *p_screen = screen->base.screen; boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8; @@ -89,6 +91,9 @@ dri_fill_in_modes(struct dri_screen *screen, stencil_bits_array[0] = 0; depth_buffer_factor = 1; + msaa_samples_max = (screen->st_api->feature_mask & ST_API_FEATURE_MS_VISUALS) + ? MSAA_VISUAL_MAX_SAMPLES : 1; + pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM, PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL); @@ -146,14 +151,16 @@ dri_fill_in_modes(struct dri_screen *screen, msaa_samples_array[0] = 0; back_buffer_factor = 3; - /* also test color for msaa 2/4/6/8 - just assume it'll work for all depth buffers */ + /* Also test for color multisample support - just assume it'll work + * for all depth buffers. + */ if (pf_r5g6b5) { msaa_samples_factor = 1; - for (i = 1; i < 5; i++) { + for (i = 2; i <= msaa_samples_max; i++) { if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM, - PIPE_TEXTURE_2D, i*2, + PIPE_TEXTURE_2D, i, PIPE_BIND_RENDER_TARGET)) { - msaa_samples_array[msaa_samples_factor] = i * 2; + msaa_samples_array[msaa_samples_factor] = i; msaa_samples_factor++; } } @@ -168,11 +175,11 @@ dri_fill_in_modes(struct dri_screen *screen, if (pf_a8r8g8b8) { msaa_samples_factor = 1; - for (i = 1; i < 5; i++) { + for (i = 2; i <= msaa_samples_max; i++) { if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM, - PIPE_TEXTURE_2D, i*2, + PIPE_TEXTURE_2D, i, PIPE_BIND_RENDER_TARGET)) { - msaa_samples_array[msaa_samples_factor] = i * 2; + msaa_samples_array[msaa_samples_factor] = i; msaa_samples_factor++; } } @@ -190,11 +197,11 @@ dri_fill_in_modes(struct dri_screen *screen, if (pf_x8r8g8b8) { msaa_samples_factor = 1; - for (i = 1; i < 5; i++) { + for (i = 2; i <= msaa_samples_max; i++) { if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM, - PIPE_TEXTURE_2D, i*2, + PIPE_TEXTURE_2D, i, PIPE_BIND_RENDER_TARGET)) { - msaa_samples_array[msaa_samples_factor] = i * 2; + msaa_samples_array[msaa_samples_factor] = i; msaa_samples_factor++; } } diff --git a/src/gallium/state_trackers/vega/vg_manager.c b/src/gallium/state_trackers/vega/vg_manager.c index e88f5f17fe5..660a7af884f 100644 --- a/src/gallium/state_trackers/vega/vg_manager.c +++ b/src/gallium/state_trackers/vega/vg_manager.c @@ -369,6 +369,7 @@ static const struct st_api vg_api = { "Vega " VEGA_VERSION_STRING, ST_API_OPENVG, ST_PROFILE_DEFAULT_MASK, + 0, vg_api_destroy, vg_api_get_proc_address, vg_api_create_context, diff --git a/src/mesa/state_tracker/st_manager.c b/src/mesa/state_tracker/st_manager.c index d54b7ed62bd..748624f3d94 100644 --- a/src/mesa/state_tracker/st_manager.c +++ b/src/mesa/state_tracker/st_manager.c @@ -890,6 +890,7 @@ static const struct st_api st_gl_api = { #if FEATURE_ES2 ST_PROFILE_OPENGL_ES2_MASK | #endif + 0, 0, st_api_destroy, st_api_get_proc_address, -- 2.30.2