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Diffstat (limited to 'src/gallium/drivers/svga/svga_pipe_rasterizer.c')
-rw-r--r--src/gallium/drivers/svga/svga_pipe_rasterizer.c250
1 files changed, 250 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_pipe_rasterizer.c b/src/gallium/drivers/svga/svga_pipe_rasterizer.c
new file mode 100644
index 0000000000..b03f8eb9cf
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_pipe_rasterizer.c
@@ -0,0 +1,250 @@
+/**********************************************************
+ * 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 "draw/draw_context.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_defines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "svga_context.h"
+#include "svga_state.h"
+
+#include "svga_hw_reg.h"
+
+/* Hardware frontwinding is always set up as SVGA3D_FRONTWINDING_CW.
+ */
+static SVGA3dFace svga_translate_cullmode( unsigned mode,
+ unsigned front_winding )
+{
+ switch (mode) {
+ case PIPE_WINDING_NONE:
+ return SVGA3D_FACE_NONE;
+ case PIPE_WINDING_CCW:
+ return SVGA3D_FACE_BACK;
+ case PIPE_WINDING_CW:
+ return SVGA3D_FACE_FRONT;
+ case PIPE_WINDING_BOTH:
+ 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 void *
+svga_create_rasterizer_state(struct pipe_context *pipe,
+ const struct pipe_rasterizer_state *templ)
+{
+ struct svga_rasterizer_state *rast = CALLOC_STRUCT( svga_rasterizer_state );
+ /* need this for draw module. */
+ rast->templ = *templ;
+
+ /* light_twoside - XXX: need fragment shader varient */
+ /* poly_smooth - XXX: no fallback available */
+ /* poly_stipple_enable - draw module */
+ /* point_sprite - ? */
+ /* point_size_per_vertex - ? */
+ /* sprite_coord_mode - ??? */
+ /* bypass_vs_viewport_and_clip - handled by viewport setup */
+ /* flatshade_first - handled by index translation */
+ /* gl_rasterization_rules - XXX - viewport code */
+ /* line_width - draw module */
+ /* fill_cw, fill_ccw - draw module or index translation */
+
+ rast->shademode = svga_translate_flatshade( templ->flatshade );
+ rast->cullmode = svga_translate_cullmode( templ->cull_mode,
+ templ->front_winding );
+ rast->scissortestenable = templ->scissor;
+ rast->multisampleantialias = templ->multisample;
+ rast->antialiasedlineenable = templ->line_smooth;
+ rast->lastpixel = templ->line_last_pixel;
+ rast->pointsize = templ->point_size;
+ rast->pointsize_min = templ->point_size_min;
+ rast->pointsize_max = templ->point_size_max;
+ rast->hw_unfilled = PIPE_POLYGON_MODE_FILL;
+
+ /* Use swtnl + decomposition implement these:
+ */
+ if (templ->poly_stipple_enable)
+ rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS;
+
+ if (templ->line_width != 1.0 &&
+ templ->line_width != 0.0)
+ rast->need_pipeline |= SVGA_PIPELINE_FLAG_LINES;
+
+ if (templ->line_stipple_enable) {
+ /* LinePattern not implemented on all backends.
+ */
+ if (0) {
+ SVGA3dLinePattern lp;
+ lp.repeat = templ->line_stipple_factor + 1;
+ lp.pattern = templ->line_stipple_pattern;
+ rast->linepattern = lp.uintValue;
+ }
+ else {
+ rast->need_pipeline |= SVGA_PIPELINE_FLAG_LINES;
+ }
+ }
+
+ if (templ->point_smooth)
+ rast->need_pipeline |= SVGA_PIPELINE_FLAG_POINTS;
+
+ {
+ boolean offset_cw = templ->offset_cw;
+ boolean offset_ccw = templ->offset_ccw;
+ boolean offset = 0;
+ int fill_cw = templ->fill_cw;
+ int fill_ccw = templ->fill_ccw;
+ int fill = PIPE_POLYGON_MODE_FILL;
+
+ switch (templ->cull_mode) {
+ case PIPE_WINDING_BOTH:
+ offset = 0;
+ fill = PIPE_POLYGON_MODE_FILL;
+ break;
+
+ case PIPE_WINDING_CW:
+ offset = offset_ccw;
+ fill = fill_ccw;
+ break;
+
+ case PIPE_WINDING_CCW:
+ offset = offset_cw;
+ fill = fill_cw;
+ break;
+
+ case PIPE_WINDING_NONE:
+ if (fill_cw != fill_ccw || offset_cw != offset_ccw)
+ {
+ /* Always need the draw module to work out different
+ * front/back fill modes:
+ */
+ rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS;
+ }
+ else {
+ offset = offset_ccw;
+ fill = fill_ccw;
+ }
+ 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 ||
+ templ->cull_mode != PIPE_WINDING_NONE))
+ {
+ fill = PIPE_POLYGON_MODE_FILL;
+ rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS;
+ }
+
+ /* 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;
+ }
+
+ /* 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;
+ }
+
+ if (offset) {
+ rast->slopescaledepthbias = templ->offset_scale;
+ rast->depthbias = templ->offset_units;
+ }
+
+ rast->hw_unfilled = fill;
+ }
+
+
+
+
+ if (rast->need_pipeline & SVGA_PIPELINE_FLAG_TRIS) {
+ /* Turn off stuff which will get done in the draw module:
+ */
+ rast->hw_unfilled = PIPE_POLYGON_MODE_FILL;
+ rast->slopescaledepthbias = 0;
+ rast->depthbias = 0;
+ }
+
+ 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;
+
+ svga->curr.rast = raster;
+
+ draw_set_rasterizer_state(svga->swtnl.draw, raster ? &raster->templ : NULL);
+
+ svga->dirty |= SVGA_NEW_RAST;
+}
+
+static void svga_delete_rasterizer_state(struct pipe_context *pipe,
+ void *raster)
+{
+ FREE(raster);
+}
+
+
+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;
+}
+
+
+/***********************************************************************
+ * Hardware state update
+ */
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-01 02:58:21 +0000