| /************************************************************************** |
| * |
| * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. |
| * 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, sub license, 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 (including the |
| * next paragraph) 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. |
| * |
| **************************************************************************/ |
| |
| /* |
| * Authors: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| */ |
| |
| #include "main/macros.h" |
| #include "st_context.h" |
| #include "st_atom.h" |
| #include "pipe/p_context.h" |
| #include "pipe/p_defines.h" |
| #include "cso_cache/cso_context.h" |
| |
| |
| static GLuint translate_fill( GLenum mode ) |
| { |
| switch (mode) { |
| case GL_POINT: |
| return PIPE_POLYGON_MODE_POINT; |
| case GL_LINE: |
| return PIPE_POLYGON_MODE_LINE; |
| case GL_FILL: |
| return PIPE_POLYGON_MODE_FILL; |
| default: |
| assert(0); |
| return 0; |
| } |
| } |
| |
| |
| |
| static void update_raster_state( struct st_context *st ) |
| { |
| struct gl_context *ctx = st->ctx; |
| struct pipe_rasterizer_state *raster = &st->state.rasterizer; |
| const struct gl_vertex_program *vertProg = ctx->VertexProgram._Current; |
| const struct gl_fragment_program *fragProg = ctx->FragmentProgram._Current; |
| uint i; |
| |
| memset(raster, 0, sizeof(*raster)); |
| |
| /* _NEW_POLYGON, _NEW_BUFFERS |
| */ |
| { |
| raster->front_ccw = (ctx->Polygon.FrontFace == GL_CCW); |
| |
| /* |
| * Gallium's surfaces are Y=0=TOP orientation. OpenGL is the |
| * opposite. Window system surfaces are Y=0=TOP. Mesa's FBOs |
| * must match OpenGL conventions so FBOs use Y=0=BOTTOM. In that |
| * case, we must invert Y and flip the notion of front vs. back. |
| */ |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM) { |
| /* Drawing to an FBO. The viewport will be inverted. */ |
| raster->front_ccw ^= 1; |
| } |
| } |
| |
| /* _NEW_LIGHT |
| */ |
| if (ctx->Light.ShadeModel == GL_FLAT) |
| raster->flatshade = 1; |
| |
| if (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION_EXT) |
| raster->flatshade_first = 1; |
| |
| /* _NEW_LIGHT | _NEW_PROGRAM */ |
| raster->light_twoside = ctx->VertexProgram._TwoSideEnabled; |
| |
| /*_NEW_LIGHT | _NEW_BUFFERS */ |
| raster->clamp_vertex_color = !st->clamp_vert_color_in_shader && |
| ctx->Light._ClampVertexColor; |
| |
| /* _NEW_POLYGON |
| */ |
| if (ctx->Polygon.CullFlag) { |
| switch (ctx->Polygon.CullFaceMode) { |
| case GL_FRONT: |
| raster->cull_face = PIPE_FACE_FRONT; |
| break; |
| case GL_BACK: |
| raster->cull_face = PIPE_FACE_BACK; |
| break; |
| case GL_FRONT_AND_BACK: |
| raster->cull_face = PIPE_FACE_FRONT_AND_BACK; |
| break; |
| } |
| } |
| else { |
| raster->cull_face = PIPE_FACE_NONE; |
| } |
| |
| /* _NEW_POLYGON |
| */ |
| { |
| raster->fill_front = translate_fill( ctx->Polygon.FrontMode ); |
| raster->fill_back = translate_fill( ctx->Polygon.BackMode ); |
| |
| /* Simplify when culling is active: |
| */ |
| if (raster->cull_face & PIPE_FACE_FRONT) { |
| raster->fill_front = raster->fill_back; |
| } |
| |
| if (raster->cull_face & PIPE_FACE_BACK) { |
| raster->fill_back = raster->fill_front; |
| } |
| } |
| |
| /* _NEW_POLYGON |
| */ |
| if (ctx->Polygon.OffsetUnits != 0.0 || |
| ctx->Polygon.OffsetFactor != 0.0) { |
| raster->offset_point = ctx->Polygon.OffsetPoint; |
| raster->offset_line = ctx->Polygon.OffsetLine; |
| raster->offset_tri = ctx->Polygon.OffsetFill; |
| } |
| |
| if (ctx->Polygon.OffsetPoint || |
| ctx->Polygon.OffsetLine || |
| ctx->Polygon.OffsetFill) { |
| raster->offset_units = ctx->Polygon.OffsetUnits; |
| raster->offset_scale = ctx->Polygon.OffsetFactor; |
| } |
| |
| if (ctx->Polygon.SmoothFlag) |
| raster->poly_smooth = 1; |
| |
| if (ctx->Polygon.StippleFlag) |
| raster->poly_stipple_enable = 1; |
| |
| /* _NEW_POINT |
| */ |
| raster->point_size = ctx->Point.Size; |
| |
| if (!ctx->Point.PointSprite && ctx->Point.SmoothFlag) |
| raster->point_smooth = 1; |
| |
| /* _NEW_POINT | _NEW_PROGRAM |
| */ |
| if (ctx->Point.PointSprite) { |
| /* origin */ |
| if ((ctx->Point.SpriteOrigin == GL_UPPER_LEFT) ^ |
| (st_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM)) |
| raster->sprite_coord_mode = PIPE_SPRITE_COORD_UPPER_LEFT; |
| else |
| raster->sprite_coord_mode = PIPE_SPRITE_COORD_LOWER_LEFT; |
| |
| /* Coord replacement flags. If bit 'k' is set that means |
| * that we need to replace GENERIC[k] attrib with an automatically |
| * computed texture coord. |
| */ |
| for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) { |
| if (ctx->Point.CoordReplace[i]) { |
| raster->sprite_coord_enable |= 1 << i; |
| } |
| } |
| if (fragProg->Base.InputsRead & FRAG_BIT_PNTC) { |
| raster->sprite_coord_enable |= |
| 1 << (FRAG_ATTRIB_PNTC - FRAG_ATTRIB_TEX0); |
| } |
| |
| raster->point_quad_rasterization = 1; |
| } |
| |
| /* ST_NEW_VERTEX_PROGRAM |
| */ |
| if (vertProg) { |
| if (vertProg->Base.Id == 0) { |
| if (vertProg->Base.OutputsWritten & BITFIELD64_BIT(VERT_RESULT_PSIZ)) { |
| /* generated program which emits point size */ |
| raster->point_size_per_vertex = TRUE; |
| } |
| } |
| else if (ctx->VertexProgram.PointSizeEnabled) { |
| /* user-defined program and GL_VERTEX_PROGRAM_POINT_SIZE set */ |
| raster->point_size_per_vertex = ctx->VertexProgram.PointSizeEnabled; |
| } |
| } |
| if (!raster->point_size_per_vertex) { |
| /* clamp size now */ |
| raster->point_size = CLAMP(ctx->Point.Size, |
| ctx->Point.MinSize, |
| ctx->Point.MaxSize); |
| } |
| |
| /* _NEW_LINE |
| */ |
| raster->line_smooth = ctx->Line.SmoothFlag; |
| if (ctx->Line.SmoothFlag) { |
| raster->line_width = CLAMP(ctx->Line.Width, |
| ctx->Const.MinLineWidthAA, |
| ctx->Const.MaxLineWidthAA); |
| } |
| else { |
| raster->line_width = CLAMP(ctx->Line.Width, |
| ctx->Const.MinLineWidth, |
| ctx->Const.MaxLineWidth); |
| } |
| |
| raster->line_stipple_enable = ctx->Line.StippleFlag; |
| raster->line_stipple_pattern = ctx->Line.StipplePattern; |
| /* GL stipple factor is in [1,256], remap to [0, 255] here */ |
| raster->line_stipple_factor = ctx->Line.StippleFactor - 1; |
| |
| /* _NEW_MULTISAMPLE */ |
| if (ctx->Multisample._Enabled || st->force_msaa) |
| raster->multisample = 1; |
| |
| /* _NEW_SCISSOR */ |
| if (ctx->Scissor.Enabled) |
| raster->scissor = 1; |
| |
| /* _NEW_FRAG_CLAMP */ |
| raster->clamp_fragment_color = !st->clamp_frag_color_in_shader && |
| ctx->Color._ClampFragmentColor && |
| !ctx->DrawBuffer->_IntegerColor; |
| raster->gl_rasterization_rules = 1; |
| |
| /* _NEW_RASTERIZER_DISCARD */ |
| raster->rasterizer_discard = ctx->RasterDiscard; |
| |
| /* _NEW_TRANSFORM */ |
| raster->depth_clip = ctx->Transform.DepthClamp == GL_FALSE; |
| raster->clip_plane_enable = ctx->Transform.ClipPlanesEnabled; |
| |
| cso_set_rasterizer(st->cso_context, raster); |
| } |
| |
| const struct st_tracked_state st_update_rasterizer = { |
| "st_update_rasterizer", /* name */ |
| { |
| (_NEW_BUFFERS | |
| _NEW_LIGHT | |
| _NEW_LINE | |
| _NEW_MULTISAMPLE | |
| _NEW_POINT | |
| _NEW_POLYGON | |
| _NEW_PROGRAM | |
| _NEW_SCISSOR | |
| _NEW_FRAG_CLAMP | |
| _NEW_RASTERIZER_DISCARD | |
| _NEW_TRANSFORM), /* mesa state dependencies*/ |
| ST_NEW_VERTEX_PROGRAM, /* state tracker dependencies */ |
| }, |
| update_raster_state /* update function */ |
| }; |
