/**************************************************************************
*
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* 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
+ * IN NO EVENT SHALL VMWARE 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>
+/* Authors: Keith Whitwell <keithw@vmware.com>
*/
#ifndef SP_QUAD_H
#define SP_QUAD_H
+#include "pipe/p_state.h"
+#include "tgsi/tgsi_exec.h"
-struct softpipe_context;
-struct quad_header;
+#define QUAD_PRIM_POINT 1
+#define QUAD_PRIM_LINE 2
+#define QUAD_PRIM_TRI 3
-struct quad_stage {
- struct softpipe_context *softpipe;
- struct quad_stage *next;
+/* The rasterizer generates 2x2 quads of fragment and feeds them to
+ * the current fp_machine (see below).
+ * Remember that Y=0=top with Y increasing down the window.
+ */
+#define QUAD_TOP_LEFT 0
+#define QUAD_TOP_RIGHT 1
+#define QUAD_BOTTOM_LEFT 2
+#define QUAD_BOTTOM_RIGHT 3
- void (*begin)(struct quad_stage *qs);
+#define MASK_TOP_LEFT (1 << QUAD_TOP_LEFT)
+#define MASK_TOP_RIGHT (1 << QUAD_TOP_RIGHT)
+#define MASK_BOTTOM_LEFT (1 << QUAD_BOTTOM_LEFT)
+#define MASK_BOTTOM_RIGHT (1 << QUAD_BOTTOM_RIGHT)
+#define MASK_ALL 0xf
- /** the stage action */
- void (*run)(struct quad_stage *qs, struct quad_header *quad);
- void (*destroy)(struct quad_stage *qs);
+/**
+ * Quad stage inputs (pos, coverage, front/back face, etc)
+ */
+struct quad_header_input
+{
+ int x0, y0; /**< quad window pos, always even */
+ unsigned layer;
+ unsigned viewport_index;
+ float coverage[TGSI_QUAD_SIZE]; /**< fragment coverage for antialiasing */
+ unsigned facing:1; /**< Front (0) or back (1) facing? */
+ unsigned prim:2; /**< QUAD_PRIM_POINT, LINE, TRI */
};
-struct quad_stage *sp_quad_polygon_stipple_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_earlyz_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_shade_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_alpha_test_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_stencil_test_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_depth_test_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_occlusion_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_coverage_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_blend_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_colormask_stage( struct softpipe_context *softpipe );
-struct quad_stage *sp_quad_output_stage( struct softpipe_context *softpipe );
+/**
+ * Quad stage inputs/outputs.
+ */
+struct quad_header_inout
+{
+ unsigned mask:4;
+};
-void sp_build_quad_pipeline(struct softpipe_context *sp);
-void sp_depth_test_quad(struct quad_stage *qs, struct quad_header *quad);
+/**
+ * Quad stage outputs (color & depth).
+ */
+struct quad_header_output
+{
+ /** colors in SOA format (rrrr, gggg, bbbb, aaaa) */
+ float color[PIPE_MAX_COLOR_BUFS][TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE];
+ float depth[TGSI_QUAD_SIZE];
+ uint8_t stencil[TGSI_QUAD_SIZE];
+};
+
+
+/**
+ * Encodes everything we need to know about a 2x2 pixel block. Uses
+ * "Channel-Serial" or "SoA" layout.
+ */
+struct quad_header {
+ struct quad_header_input input;
+ struct quad_header_inout inout;
+ struct quad_header_output output;
+
+ /* Redundant/duplicated:
+ */
+ const struct tgsi_interp_coef *posCoef;
+ const struct tgsi_interp_coef *coef;
+};
#endif /* SP_QUAD_H */