| /********************************************************** |
| * Copyright 2008-2009 VMware, Inc. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person |
| * obtaining a copy of this software and associated documentation |
| * files (the "Software"), to deal in the Software without |
| * restriction, including without limitation the rights to use, copy, |
| * modify, merge, publish, distribute, sublicense, and/or sell copies |
| * of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| **********************************************************/ |
| |
| #include "pipe/p_defines.h" |
| #include "draw/draw_context.h" |
| #include "util/u_bitmask.h" |
| #include "util/u_inlines.h" |
| #include "util/u_math.h" |
| #include "util/u_memory.h" |
| |
| #include "svga_cmd.h" |
| #include "svga_context.h" |
| #include "svga_hw_reg.h" |
| #include "svga_screen.h" |
| |
| |
| /* Hardware frontwinding is always set up as SVGA3D_FRONTWINDING_CW. |
| */ |
| static SVGA3dFace |
| svga_translate_cullmode(unsigned mode, unsigned front_ccw) |
| { |
| const int hw_front_ccw = 0; /* hardware is always CW */ |
| switch (mode) { |
| case PIPE_FACE_NONE: |
| return SVGA3D_FACE_NONE; |
| case PIPE_FACE_FRONT: |
| return front_ccw == hw_front_ccw ? SVGA3D_FACE_FRONT : SVGA3D_FACE_BACK; |
| case PIPE_FACE_BACK: |
| return front_ccw == hw_front_ccw ? SVGA3D_FACE_BACK : SVGA3D_FACE_FRONT; |
| case PIPE_FACE_FRONT_AND_BACK: |
| return SVGA3D_FACE_FRONT_BACK; |
| default: |
| assert(0); |
| return SVGA3D_FACE_NONE; |
| } |
| } |
| |
| static SVGA3dShadeMode |
| svga_translate_flatshade(unsigned mode) |
| { |
| return mode ? SVGA3D_SHADEMODE_FLAT : SVGA3D_SHADEMODE_SMOOTH; |
| } |
| |
| |
| static unsigned |
| translate_fill_mode(unsigned fill) |
| { |
| switch (fill) { |
| case PIPE_POLYGON_MODE_POINT: |
| return SVGA3D_FILLMODE_POINT; |
| case PIPE_POLYGON_MODE_LINE: |
| return SVGA3D_FILLMODE_LINE; |
| case PIPE_POLYGON_MODE_FILL: |
| return SVGA3D_FILLMODE_FILL; |
| default: |
| assert(!"Bad fill mode"); |
| return SVGA3D_FILLMODE_FILL; |
| } |
| } |
| |
| |
| static unsigned |
| translate_cull_mode(unsigned cull) |
| { |
| switch (cull) { |
| case PIPE_FACE_NONE: |
| return SVGA3D_CULL_NONE; |
| case PIPE_FACE_FRONT: |
| return SVGA3D_CULL_FRONT; |
| case PIPE_FACE_BACK: |
| return SVGA3D_CULL_BACK; |
| case PIPE_FACE_FRONT_AND_BACK: |
| /* NOTE: we simply no-op polygon drawing in svga_draw_vbo() */ |
| return SVGA3D_CULL_NONE; |
| default: |
| assert(!"Bad cull mode"); |
| return SVGA3D_CULL_NONE; |
| } |
| } |
| |
| |
| static void |
| define_rasterizer_object(struct svga_context *svga, |
| struct svga_rasterizer_state *rast) |
| { |
| struct svga_screen *svgascreen = svga_screen(svga->pipe.screen); |
| unsigned fill_mode = translate_fill_mode(rast->templ.fill_front); |
| const unsigned cull_mode = translate_cull_mode(rast->templ.cull_face); |
| const int depth_bias = rast->templ.offset_units; |
| const float slope_scaled_depth_bias = rast->templ.offset_scale; |
| /* PIPE_CAP_POLYGON_OFFSET_CLAMP not supported: */ |
| const float depth_bias_clamp = 0.0; |
| const float line_width = rast->templ.line_width > 0.0f ? |
| rast->templ.line_width : 1.0f; |
| const uint8 line_factor = rast->templ.line_stipple_enable ? |
| rast->templ.line_stipple_factor : 0; |
| const uint16 line_pattern = rast->templ.line_stipple_enable ? |
| rast->templ.line_stipple_pattern : 0; |
| const uint8 pv_last = !rast->templ.flatshade_first && |
| svgascreen->haveProvokingVertex; |
| |
| rast->id = util_bitmask_add(svga->rast_object_id_bm); |
| |
| if (rast->templ.fill_front != rast->templ.fill_back) { |
| /* The VGPU10 device can't handle different front/back fill modes. |
| * We'll handle that with a swtnl/draw fallback. But we need to |
| * make sure we always fill triangles in that case. |
| */ |
| fill_mode = SVGA3D_FILLMODE_FILL; |
| } |
| |
| SVGA_RETRY(svga, SVGA3D_vgpu10_DefineRasterizerState |
| (svga->swc, |
| rast->id, |
| fill_mode, |
| cull_mode, |
| rast->templ.front_ccw, |
| depth_bias, |
| depth_bias_clamp, |
| slope_scaled_depth_bias, |
| rast->templ.depth_clip_near, |
| rast->templ.scissor, |
| rast->templ.multisample, |
| rast->templ.line_smooth, |
| line_width, |
| rast->templ.line_stipple_enable, |
| line_factor, |
| line_pattern, |
| pv_last)); |
| } |
| |
| |
| static void * |
| svga_create_rasterizer_state(struct pipe_context *pipe, |
| const struct pipe_rasterizer_state *templ) |
| { |
| struct svga_context *svga = svga_context(pipe); |
| struct svga_rasterizer_state *rast = CALLOC_STRUCT(svga_rasterizer_state); |
| struct svga_screen *screen = svga_screen(pipe->screen); |
| |
| if (!rast) |
| return NULL; |
| |
| /* need this for draw module. */ |
| rast->templ = *templ; |
| |
| rast->shademode = svga_translate_flatshade(templ->flatshade); |
| rast->cullmode = svga_translate_cullmode(templ->cull_face, templ->front_ccw); |
| rast->scissortestenable = templ->scissor; |
| rast->multisampleantialias = templ->multisample; |
| rast->antialiasedlineenable = templ->line_smooth; |
| rast->lastpixel = templ->line_last_pixel; |
| rast->pointsprite = templ->point_quad_rasterization; |
| |
| if (rast->templ.multisample) { |
| /* The OpenGL 3.0 spec says points are always drawn as circles when |
| * MSAA is enabled. Note that our implementation isn't 100% correct, |
| * though. Our smooth point implementation involves drawing a square, |
| * computing fragment distance from point center, then attenuating |
| * the fragment alpha value. We should not attenuate alpha if msaa |
| * is enabled. We should kill fragments entirely outside the circle |
| * and let the GPU compute per-fragment coverage. |
| * But as-is, our implementation gives acceptable results and passes |
| * Piglit's MSAA point smooth test. |
| */ |
| rast->templ.point_smooth = TRUE; |
| } |
| |
| if (rast->templ.point_smooth && |
| rast->templ.point_size_per_vertex == 0 && |
| rast->templ.point_size <= screen->pointSmoothThreshold) { |
| /* If the point size is less than the threshold, disable smoothing. |
| * Note that this only effects point rendering when we use the |
| * pipe_rasterizer_state::point_size value, not when the point size |
| * is set in the VS. |
| */ |
| rast->templ.point_smooth = FALSE; |
| } |
| |
| if (rast->templ.point_smooth) { |
| /* For smooth points we need to generate fragments for at least |
| * a 2x2 region. Otherwise the quad we draw may be too small and |
| * we may generate no fragments at all. |
| */ |
| rast->pointsize = MAX2(2.0f, templ->point_size); |
| } |
| else { |
| rast->pointsize = templ->point_size; |
| } |
| |
| rast->hw_fillmode = PIPE_POLYGON_MODE_FILL; |
| |
| /* Use swtnl + decomposition implement these: |
| */ |
| |
| if (templ->line_width <= screen->maxLineWidth) { |
| /* pass line width to device */ |
| rast->linewidth = MAX2(1.0F, templ->line_width); |
| } |
| else if (svga->debug.no_line_width) { |
| /* nothing */ |
| } |
| else { |
| /* use 'draw' pipeline for wide line */ |
| rast->need_pipeline |= SVGA_PIPELINE_FLAG_LINES; |
| rast->need_pipeline_lines_str = "line width"; |
| } |
| |
| if (templ->line_stipple_enable) { |
| if (screen->haveLineStipple || svga->debug.force_hw_line_stipple) { |
| SVGA3dLinePattern lp; |
| lp.repeat = templ->line_stipple_factor + 1; |
| lp.pattern = templ->line_stipple_pattern; |
| rast->linepattern = lp.uintValue; |
| } |
| else { |
| /* use 'draw' module to decompose into short line segments */ |
| rast->need_pipeline |= SVGA_PIPELINE_FLAG_LINES; |
| rast->need_pipeline_lines_str = "line stipple"; |
| } |
| } |
| |
| if (!svga_have_vgpu10(svga) && rast->templ.point_smooth) { |
| rast->need_pipeline |= SVGA_PIPELINE_FLAG_POINTS; |
| rast->need_pipeline_points_str = "smooth points"; |
| } |
| |
| if (templ->line_smooth && !screen->haveLineSmooth) { |
| /* |
| * XXX: Enabling the pipeline slows down performance immensely, so ignore |
| * line smooth state, where there is very little visual improvement. |
| * Smooth lines will still be drawn for wide lines. |
| */ |
| #if 0 |
| rast->need_pipeline |= SVGA_PIPELINE_FLAG_LINES; |
| rast->need_pipeline_lines_str = "smooth lines"; |
| #endif |
| } |
| |
| { |
| int fill_front = templ->fill_front; |
| int fill_back = templ->fill_back; |
| int fill = PIPE_POLYGON_MODE_FILL; |
| boolean offset_front = util_get_offset(templ, fill_front); |
| boolean offset_back = util_get_offset(templ, fill_back); |
| boolean offset = FALSE; |
| |
| switch (templ->cull_face) { |
| case PIPE_FACE_FRONT_AND_BACK: |
| offset = FALSE; |
| fill = PIPE_POLYGON_MODE_FILL; |
| break; |
| |
| case PIPE_FACE_FRONT: |
| offset = offset_back; |
| fill = fill_back; |
| break; |
| |
| case PIPE_FACE_BACK: |
| offset = offset_front; |
| fill = fill_front; |
| break; |
| |
| case PIPE_FACE_NONE: |
| if (fill_front != fill_back || offset_front != offset_back) { |
| /* Always need the draw module to work out different |
| * front/back fill modes: |
| */ |
| rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS; |
| rast->need_pipeline_tris_str = "different front/back fillmodes"; |
| fill = PIPE_POLYGON_MODE_FILL; |
| } |
| else { |
| offset = offset_front; |
| fill = fill_front; |
| } |
| break; |
| |
| default: |
| assert(0); |
| break; |
| } |
| |
| /* Unfilled primitive modes aren't implemented on all virtual |
| * hardware. We can do some unfilled processing with index |
| * translation, but otherwise need the draw module: |
| */ |
| if (fill != PIPE_POLYGON_MODE_FILL && |
| (templ->flatshade || |
| templ->light_twoside || |
| offset)) { |
| fill = PIPE_POLYGON_MODE_FILL; |
| rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS; |
| rast->need_pipeline_tris_str = "unfilled primitives with no index manipulation"; |
| } |
| |
| /* If we are decomposing to lines, and lines need the pipeline, |
| * then we also need the pipeline for tris. |
| */ |
| if (fill == PIPE_POLYGON_MODE_LINE && |
| (rast->need_pipeline & SVGA_PIPELINE_FLAG_LINES)) { |
| fill = PIPE_POLYGON_MODE_FILL; |
| rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS; |
| rast->need_pipeline_tris_str = "decomposing lines"; |
| } |
| |
| /* Similarly for points: |
| */ |
| if (fill == PIPE_POLYGON_MODE_POINT && |
| (rast->need_pipeline & SVGA_PIPELINE_FLAG_POINTS)) { |
| fill = PIPE_POLYGON_MODE_FILL; |
| rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS; |
| rast->need_pipeline_tris_str = "decomposing points"; |
| } |
| |
| if (offset) { |
| rast->slopescaledepthbias = templ->offset_scale; |
| rast->depthbias = templ->offset_units; |
| } |
| |
| rast->hw_fillmode = fill; |
| } |
| |
| if (rast->need_pipeline & SVGA_PIPELINE_FLAG_TRIS) { |
| /* Turn off stuff which will get done in the draw module: |
| */ |
| rast->hw_fillmode = PIPE_POLYGON_MODE_FILL; |
| rast->slopescaledepthbias = 0; |
| rast->depthbias = 0; |
| } |
| |
| if (0 && rast->need_pipeline) { |
| debug_printf("svga: rast need_pipeline = 0x%x\n", rast->need_pipeline); |
| debug_printf(" pnts: %s \n", rast->need_pipeline_points_str); |
| debug_printf(" lins: %s \n", rast->need_pipeline_lines_str); |
| debug_printf(" tris: %s \n", rast->need_pipeline_tris_str); |
| } |
| |
| if (svga_have_vgpu10(svga)) { |
| define_rasterizer_object(svga, rast); |
| } |
| |
| if (templ->poly_smooth) { |
| pipe_debug_message(&svga->debug.callback, CONFORMANCE, |
| "GL_POLYGON_SMOOTH not supported"); |
| } |
| |
| svga->hud.num_rasterizer_objects++; |
| SVGA_STATS_COUNT_INC(svga_screen(svga->pipe.screen)->sws, |
| SVGA_STATS_COUNT_RASTERIZERSTATE); |
| |
| return rast; |
| } |
| |
| |
| static void |
| svga_bind_rasterizer_state(struct pipe_context *pipe, void *state) |
| { |
| struct svga_context *svga = svga_context(pipe); |
| struct svga_rasterizer_state *raster = (struct svga_rasterizer_state *)state; |
| |
| if (!raster || !svga->curr.rast) { |
| svga->dirty |= SVGA_NEW_STIPPLE | SVGA_NEW_DEPTH_STENCIL_ALPHA; |
| } |
| else { |
| if (raster->templ.poly_stipple_enable != |
| svga->curr.rast->templ.poly_stipple_enable) { |
| svga->dirty |= SVGA_NEW_STIPPLE; |
| } |
| if (raster->templ.rasterizer_discard != |
| svga->curr.rast->templ.rasterizer_discard) { |
| svga->dirty |= SVGA_NEW_DEPTH_STENCIL_ALPHA; |
| } |
| } |
| |
| svga->curr.rast = raster; |
| |
| svga->dirty |= SVGA_NEW_RAST; |
| } |
| |
| |
| static void |
| svga_delete_rasterizer_state(struct pipe_context *pipe, void *state) |
| { |
| struct svga_context *svga = svga_context(pipe); |
| struct svga_rasterizer_state *raster = |
| (struct svga_rasterizer_state *) state; |
| |
| if (svga_have_vgpu10(svga)) { |
| SVGA_RETRY(svga, SVGA3D_vgpu10_DestroyRasterizerState(svga->swc, |
| raster->id)); |
| |
| if (raster->id == svga->state.hw_draw.rasterizer_id) |
| svga->state.hw_draw.rasterizer_id = SVGA3D_INVALID_ID; |
| |
| util_bitmask_clear(svga->rast_object_id_bm, raster->id); |
| } |
| |
| FREE(state); |
| svga->hud.num_rasterizer_objects--; |
| } |
| |
| |
| void |
| svga_init_rasterizer_functions(struct svga_context *svga) |
| { |
| svga->pipe.create_rasterizer_state = svga_create_rasterizer_state; |
| svga->pipe.bind_rasterizer_state = svga_bind_rasterizer_state; |
| svga->pipe.delete_rasterizer_state = svga_delete_rasterizer_state; |
| } |
