From: Christoph Bumiller Date: Mon, 6 Feb 2012 15:29:03 +0000 (+0100) Subject: gallium: add PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8b4f7b0672d663273310fffa9490ad996f5b914a;p=mesa.git gallium: add PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION Just let the hardware do it if it can and avoid drivers having to check for the special case on each draw call. v2: update the draw module --- diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c index 3c0b1aa39c9..ad49ce733ac 100644 --- a/src/gallium/auxiliary/draw/draw_context.c +++ b/src/gallium/auxiliary/draw/draw_context.c @@ -93,11 +93,11 @@ draw_create_context(struct pipe_context *pipe, boolean try_llvm, } #endif + draw->pipe = pipe; + if (!draw_init(draw)) goto err_destroy; - draw->pipe = pipe; - return draw; err_destroy: @@ -168,6 +168,9 @@ boolean draw_init(struct draw_context *draw) if (!draw_gs_init( draw )) return FALSE; + draw->quads_always_flatshade_last = !draw->pipe->screen->get_param( + draw->pipe->screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION); + return TRUE; } diff --git a/src/gallium/auxiliary/draw/draw_decompose_tmp.h b/src/gallium/auxiliary/draw/draw_decompose_tmp.h index a142563af97..ee6877df99d 100644 --- a/src/gallium/auxiliary/draw/draw_decompose_tmp.h +++ b/src/gallium/auxiliary/draw/draw_decompose_tmp.h @@ -193,13 +193,18 @@ FUNC(FUNC_VARS) flags = DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_0 | DRAW_PIPE_EDGE_FLAG_1; - /* XXX should always emit idx[0] first */ - /* always emit idx[3] first */ - TRIANGLE(flags, idx[3], idx[0], idx[1]); + /* always emit idx[3] / idx[0] first */ + if (quads_flatshade_last) + TRIANGLE(flags, idx[3], idx[0], idx[1]); + else + TRIANGLE(flags, idx[0], idx[1], idx[2]); flags = DRAW_PIPE_EDGE_FLAG_1 | DRAW_PIPE_EDGE_FLAG_2; - TRIANGLE(flags, idx[3], idx[1], idx[2]); + if (quads_flatshade_last) + TRIANGLE(flags, idx[3], idx[1], idx[2]); + else + TRIANGLE(flags, idx[0], idx[2], idx[3]); } } break; @@ -237,13 +242,18 @@ FUNC(FUNC_VARS) flags = DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_0 | DRAW_PIPE_EDGE_FLAG_1; - /* XXX should always emit idx[0] first */ - /* always emit idx[3] first */ - TRIANGLE(flags, idx[3], idx[2], idx[0]); + /* always emit idx[3] / idx[0 first */ + if (quads_flatshade_last) + TRIANGLE(flags, idx[3], idx[2], idx[0]); + else + TRIANGLE(flags, idx[0], idx[3], idx[2]); flags = DRAW_PIPE_EDGE_FLAG_1 | DRAW_PIPE_EDGE_FLAG_2; - TRIANGLE(flags, idx[3], idx[0], idx[1]); + if (quads_flatshade_last) + TRIANGLE(flags, idx[3], idx[0], idx[1]); + else + TRIANGLE(flags, idx[0], idx[1], idx[3]); } } } diff --git a/src/gallium/auxiliary/draw/draw_gs_tmp.h b/src/gallium/auxiliary/draw/draw_gs_tmp.h index de7b02655a5..92b6fb75ea1 100644 --- a/src/gallium/auxiliary/draw/draw_gs_tmp.h +++ b/src/gallium/auxiliary/draw/draw_gs_tmp.h @@ -9,6 +9,7 @@ const unsigned prim = input_prims->prim; \ const unsigned prim_flags = input_prims->flags; \ const unsigned count = input_prims->count; \ + const boolean quads_flatshade_last = FALSE; \ const boolean last_vertex_last = TRUE; \ do { \ debug_assert(input_prims->primitive_count == 1); \ diff --git a/src/gallium/auxiliary/draw/draw_private.h b/src/gallium/auxiliary/draw/draw_private.h index c3eca973e92..9e6380341da 100644 --- a/src/gallium/auxiliary/draw/draw_private.h +++ b/src/gallium/auxiliary/draw/draw_private.h @@ -204,6 +204,8 @@ struct draw_context boolean guard_band_xy; } driver; + boolean quads_always_flatshade_last; + boolean flushing; /**< debugging/sanity */ boolean suspend_flushing; /**< internally set */ diff --git a/src/gallium/auxiliary/draw/draw_pt_decompose.h b/src/gallium/auxiliary/draw/draw_pt_decompose.h index 3127aad7310..8637085064a 100644 --- a/src/gallium/auxiliary/draw/draw_pt_decompose.h +++ b/src/gallium/auxiliary/draw/draw_pt_decompose.h @@ -1,5 +1,7 @@ #define LOCAL_VARS \ char *verts = (char *) vertices; \ + const boolean quads_flatshade_last = \ + draw->quads_always_flatshade_last; \ const boolean last_vertex_last = \ !(draw->rasterizer->flatshade && \ draw->rasterizer->flatshade_first); diff --git a/src/gallium/auxiliary/draw/draw_so_emit_tmp.h b/src/gallium/auxiliary/draw/draw_so_emit_tmp.h index 7fafde9d5e6..ec31c3ff32f 100644 --- a/src/gallium/auxiliary/draw/draw_so_emit_tmp.h +++ b/src/gallium/auxiliary/draw/draw_so_emit_tmp.h @@ -9,6 +9,7 @@ /* declare more local vars */ \ const unsigned prim = input_prims->prim; \ const unsigned prim_flags = input_prims->flags; \ + const boolean quads_flatshade_last = FALSE; \ const boolean last_vertex_last = TRUE; \ do { \ debug_assert(input_prims->primitive_count == 1); \ diff --git a/src/gallium/docs/source/cso/rasterizer.rst b/src/gallium/docs/source/cso/rasterizer.rst index 482b1ea02c9..150e6df88ae 100644 --- a/src/gallium/docs/source/cso/rasterizer.rst +++ b/src/gallium/docs/source/cso/rasterizer.rst @@ -59,13 +59,14 @@ flatshade_first Whether the first vertex should be the provoking vertex, for most primitives. If not set, the last vertex is the provoking vertex. -There are several important exceptions to the specification of this rule. +There are a few important exceptions to the specification of this rule. * ``PIPE_PRIMITIVE_POLYGON``: The provoking vertex is always the first vertex. If the caller wishes to change the provoking vertex, they merely need to rotate the vertices themselves. -* ``PIPE_PRIMITIVE_QUAD``, ``PIPE_PRIMITIVE_QUAD_STRIP``: This option has no - effect; the provoking vertex is always the last vertex. +* ``PIPE_PRIMITIVE_QUAD``, ``PIPE_PRIMITIVE_QUAD_STRIP``: The option only has + an effect if ``PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION`` is true. + If it is not, the provoking vertex is always the last vertex. * ``PIPE_PRIMITIVE_TRIANGLE_FAN``: When set, the provoking vertex is the second vertex, not the first. This permits each segment of the fan to have a different color. diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst index 2af9f74e902..51d94649c2f 100644 --- a/src/gallium/docs/source/screen.rst +++ b/src/gallium/docs/source/screen.rst @@ -96,6 +96,8 @@ The integer capabilities: controlled through pipe_rasterizer_state. * ``PIPE_CAP_GLSL_FEATURE_LEVEL``: Whether the driver supports features equivalent to a specific GLSL version. E.g. for GLSL 1.3, report 130. +* ``PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION``: Whether quads adhere to + the flatshade_first setting in ``pipe_rasterizer_state``. diff --git a/src/gallium/drivers/i915/i915_screen.c b/src/gallium/drivers/i915/i915_screen.c index aef0ed6980d..a37241f5002 100644 --- a/src/gallium/drivers/i915/i915_screen.c +++ b/src/gallium/drivers/i915/i915_screen.c @@ -204,6 +204,7 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap) case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS: case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS: case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: + case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: return 0; /* Features we can lie about (boolean caps). */ diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c index fd6e439f609..7f0f17ed784 100644 --- a/src/gallium/drivers/llvmpipe/lp_screen.c +++ b/src/gallium/drivers/llvmpipe/lp_screen.c @@ -157,6 +157,8 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_MIXED_COLORBUFFER_FORMATS: case PIPE_CAP_CONDITIONAL_RENDER: return 1; + case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: + return 0; default: return 0; } diff --git a/src/gallium/drivers/nv50/nv50_screen.c b/src/gallium/drivers/nv50/nv50_screen.c index 904f39a358d..1d5359327bc 100644 --- a/src/gallium/drivers/nv50/nv50_screen.c +++ b/src/gallium/drivers/nv50/nv50_screen.c @@ -146,6 +146,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_MIXED_COLORBUFFER_FORMATS: case PIPE_CAP_CONDITIONAL_RENDER: case PIPE_CAP_TEXTURE_BARRIER: + case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: return 1; case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS: case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS: diff --git a/src/gallium/drivers/nvc0/nvc0_screen.c b/src/gallium/drivers/nvc0/nvc0_screen.c index 676af769834..abc04ab7b8b 100644 --- a/src/gallium/drivers/nvc0/nvc0_screen.c +++ b/src/gallium/drivers/nvc0/nvc0_screen.c @@ -132,6 +132,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_MIXED_COLORBUFFER_FORMATS: case PIPE_CAP_CONDITIONAL_RENDER: case PIPE_CAP_TEXTURE_BARRIER: + case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: return 1; case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS: case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS: diff --git a/src/gallium/drivers/nvfx/nvfx_screen.c b/src/gallium/drivers/nvfx/nvfx_screen.c index ba1a2423d4b..d47558e7a86 100644 --- a/src/gallium/drivers/nvfx/nvfx_screen.c +++ b/src/gallium/drivers/nvfx/nvfx_screen.c @@ -98,6 +98,7 @@ nvfx_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS: case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS: case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS: + case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: return 0; default: NOUVEAU_ERR("Warning: unknown PIPE_CAP %d\n", param); diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c index eb233a0b0be..6b3b6c1cccf 100644 --- a/src/gallium/drivers/r300/r300_screen.c +++ b/src/gallium/drivers/r300/r300_screen.c @@ -140,6 +140,7 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param) case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS: case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME: case PIPE_CAP_FRAGMENT_COLOR_CLAMPED: + case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: return 0; /* SWTCL-only features. */ diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c index 140ae11af9a..bfb01f5d532 100644 --- a/src/gallium/drivers/r600/r600_pipe.c +++ b/src/gallium/drivers/r600/r600_pipe.c @@ -391,6 +391,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param) case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS: case PIPE_CAP_FRAGMENT_COLOR_CLAMPED: case PIPE_CAP_VERTEX_COLOR_CLAMPED: + case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: return 0; /* Stream output. */ diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c index 6d61d003975..5e50bfb292c 100644 --- a/src/gallium/drivers/softpipe/sp_screen.c +++ b/src/gallium/drivers/softpipe/sp_screen.c @@ -134,6 +134,8 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param) return 1; case PIPE_CAP_GLSL_FEATURE_LEVEL: return 130; + case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: + return 0; default: return 0; } diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c index 7359165621e..8d47e69006c 100644 --- a/src/gallium/drivers/svga/svga_screen.c +++ b/src/gallium/drivers/svga/svga_screen.c @@ -203,6 +203,9 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_MIXED_COLORBUFFER_FORMATS: return 0; + case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: + return 0; + default: return 0; } diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h index 88bd66c816a..4155178dda4 100644 --- a/src/gallium/include/pipe/p_defines.h +++ b/src/gallium/include/pipe/p_defines.h @@ -488,7 +488,8 @@ enum pipe_cap { PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS = 59, /* temporary */ PIPE_CAP_VERTEX_COLOR_UNCLAMPED = 60, PIPE_CAP_VERTEX_COLOR_CLAMPED = 61, - PIPE_CAP_GLSL_FEATURE_LEVEL = 62 + PIPE_CAP_GLSL_FEATURE_LEVEL = 62, + PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION = 63 }; /** diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c index 443cb4bdfd1..fb36a6809c0 100644 --- a/src/mesa/state_tracker/st_extensions.c +++ b/src/mesa/state_tracker/st_extensions.c @@ -146,8 +146,8 @@ void st_init_limits(struct st_context *st) = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), 1, MAX_DRAW_BUFFERS); - /* Quads always follow GL provoking rules. */ - c->QuadsFollowProvokingVertexConvention = GL_FALSE; + c->QuadsFollowProvokingVertexConvention = screen->get_param( + screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION); for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) { struct gl_shader_compiler_options *options =