diff options
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_atom_rasterizer.c')
| -rw-r--r-- | mesalib/src/mesa/state_tracker/st_atom_rasterizer.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_atom_rasterizer.c b/mesalib/src/mesa/state_tracker/st_atom_rasterizer.c new file mode 100644 index 000000000..4936385d2 --- /dev/null +++ b/mesalib/src/mesa/state_tracker/st_atom_rasterizer.c @@ -0,0 +1,272 @@ +/**************************************************************************
+ *
+ * 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);
+
+ /* XXX
+ * I think the intention here is that user-created framebuffer objects
+ * use Y=0=TOP layout instead of OpenGL's normal Y=0=bottom layout.
+ * Flipping Y changes CW to CCW and vice-versa.
+ * But this is an implementation/driver-specific artifact - remove...
+ */
+ if (ctx->DrawBuffer && ctx->DrawBuffer->Name != 0)
+ 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
+ *
+ * Back-face colors can come from traditional lighting (when
+ * GL_LIGHT_MODEL_TWO_SIDE is set) or from vertex programs/shaders (when
+ * GL_VERTEX_PROGRAM_TWO_SIDE is set). Note the logic here.
+ */
+ if (ctx->VertexProgram._Current) {
+ if (ctx->VertexProgram._Enabled ||
+ (ctx->Shader.CurrentVertexProgram &&
+ ctx->Shader.CurrentVertexProgram->LinkStatus)) {
+ /* user-defined vertex program or shader */
+ raster->light_twoside = ctx->VertexProgram.TwoSideEnabled;
+ }
+ else {
+ /* TNL-generated program */
+ raster->light_twoside = ctx->Light.Enabled && ctx->Light.Model.TwoSide;
+ }
+ }
+ else if (ctx->Light.Enabled && ctx->Light.Model.TwoSide) {
+ raster->light_twoside = 1;
+ }
+
+ /* _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;
+
+ raster->gl_rasterization_rules = 1;
+
+ 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), /* mesa state dependencies*/
+ ST_NEW_VERTEX_PROGRAM, /* state tracker dependencies */
+ },
+ update_raster_state /* update function */
+};
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