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/************************************************************************** |
* |
* 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 |
*/ |
raster->flatshade = ctx->Light.ShadeModel == GL_FLAT; |
|
raster->flatshade_first = ctx->Light.ProvokingVertex == |
GL_FIRST_VERTEX_CONVENTION_EXT; |
|
/* _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.OffsetPoint || |
ctx->Polygon.OffsetLine || |
ctx->Polygon.OffsetFill) { |
raster->offset_point = ctx->Polygon.OffsetPoint; |
raster->offset_line = ctx->Polygon.OffsetLine; |
raster->offset_tri = ctx->Polygon.OffsetFill; |
raster->offset_units = ctx->Polygon.OffsetUnits; |
raster->offset_scale = ctx->Polygon.OffsetFactor; |
} |
|
raster->poly_smooth = ctx->Polygon.SmoothFlag; |
raster->poly_stipple_enable = ctx->Polygon.StippleFlag; |
|
/* _NEW_POINT |
*/ |
raster->point_size = ctx->Point.Size; |
raster->point_smooth = !ctx->Point.PointSprite && ctx->Point.SmoothFlag; |
|
/* _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 & VARYING_BIT_PNTC) { |
raster->sprite_coord_enable |= |
1 << (VARYING_SLOT_PNTC - VARYING_SLOT_TEX0); |
} |
|
raster->point_quad_rasterization = 1; |
} |
|
/* ST_NEW_VERTEX_PROGRAM |
*/ |
if (vertProg) { |
if (vertProg->Base.Id == 0) { |
if (vertProg->Base.OutputsWritten & BITFIELD64_BIT(VARYING_SLOT_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 */ |
raster->multisample = ctx->Multisample._Enabled; |
|
/* _NEW_SCISSOR */ |
raster->scissor = ctx->Scissor.Enabled; |
|
/* _NEW_FRAG_CLAMP */ |
raster->clamp_fragment_color = !st->clamp_frag_color_in_shader && |
ctx->Color._ClampFragmentColor; |
|
raster->half_pixel_center = 1; |
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) |
raster->bottom_edge_rule = 1; |
|
/* ST_NEW_RASTERIZER */ |
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_TRANSFORM), /* mesa state dependencies*/ |
(ST_NEW_VERTEX_PROGRAM | |
ST_NEW_RASTERIZER), /* state tracker dependencies */ |
}, |
update_raster_state /* update function */ |
}; |