+/**************************************************************************
+ *
+ * Copyright 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, 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 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.
+ *
+ **************************************************************************/
+
+/**
+ * The rast code is concerned with rasterization of command bins.
+ * Each screen tile has a bin associated with it. To render the
+ * scene we iterate over the tile bins and execute the commands
+ * in each bin.
+ * We'll do that with multiple threads...
+ */
+
#ifndef LP_RAST_H
#define LP_RAST_H
-/* Initially create and program a single rasterizer directly. Later
- * will want multiple of these, one or two per core. At that stage
- * will probably pass command buffers into the rasterizers rather than
- * individual function calls like this.
- */
+#include "pipe/p_compiler.h"
+#include "lp_jit.h"
+
+
struct lp_rasterizer;
+struct lp_scene;
+struct lp_scene_queue;
+struct lp_fence;
+struct cmd_bin;
+struct pipe_screen;
+
+/** For sub-pixel positioning */
+#define FIXED_ORDER 4
+#define FIXED_ONE (1<<FIXED_ORDER)
+
+
+struct lp_rasterizer_task;
+
+/**
+ * Rasterization state.
+ * Objects of this type are put into the shared data bin and pointed
+ * to by commands in the per-tile bins.
+ */
struct lp_rast_state {
- /* State for the shader:
+ /* State for the shader. This also contains state which feeds into
+ * the fragment shader, such as blend color and alpha ref value.
*/
- struct lp_jit_context jc;
+ struct lp_jit_context jit_context;
/* The shader itself. Probably we also need to pass a pointer to
* the tile color/z/stencil data somehow:
- */
- lp_jit_frag_func shader;
+ * jit_function[0] skips the triangle in/out test code
+ * jit_function[1] does triangle in/out testing
+ */
+ lp_jit_frag_func jit_function[2];
+ boolean opaque;
};
-/* Coefficients necessary to run the shader at a given location:
+
+/**
+ * Coefficients necessary to run the shader at a given location.
+ * First coefficient is position.
+ * These pointers point into the bin data buffer.
*/
struct lp_rast_shader_inputs {
+ float (*a0)[4];
+ float (*dadx)[4];
+ float (*dady)[4];
- /* Current rasterizer state:
- */
- const struct lp_rast_state *state;
-
- /* Attribute interpolation:
- */
- struct tgsi_interp_coef position_coef;
- struct tgsi_interp_coef *coef;
+ /* edge/step info for 3 edges and 4x4 block of pixels */
+ PIPE_ALIGN_VAR(16) int step[3][16];
};
-/* Rasterization information for a triangle known to be in this bin,
+/**
+ * Rasterization information for a triangle known to be in this bin,
* plus inputs to run the shader:
+ * These fields are tile- and bin-independent.
+ * Objects of this type are put into the setup_context::data buffer.
*/
struct lp_rast_triangle {
/* one-pixel sized trivial accept offsets for each plane */
- float ei1;
- float ei2;
- float ei3;
+ int ei1;
+ int ei2;
+ int ei3;
/* one-pixel sized trivial reject offsets for each plane */
- float eo1;
- float eo2;
- float eo3;
-
- /* y deltas for vertex pairs */
- float dy12;
- float dy23;
- float dy31;
-
- /* x deltas for vertex pairs */
- float dx12;
- float dx23;
- float dx31;
-
- /* State to run the shader: */
- struct lp_rast_shader_inputs inputs;
+ int eo1;
+ int eo2;
+ int eo3;
+
+ /* y deltas for vertex pairs (in fixed pt) */
+ int dy12;
+ int dy23;
+ int dy31;
+
+ /* x deltas for vertex pairs (in fixed pt) */
+ int dx12;
+ int dx23;
+ int dx31;
+
+ /* edge function values at minx,miny ?? */
+ int c1, c2, c3;
+
+ /* inputs for the shader */
+ PIPE_ALIGN_VAR(16) struct lp_rast_shader_inputs inputs;
};
-struct lp_rasterizer *lp_rast_create( void );
+struct lp_rasterizer *lp_rast_create( struct pipe_screen *screen,
+ struct lp_scene_queue *empty );
-void lp_rast_bind_surfaces( struct lp_rasterizer *,
- struct pipe_surface *color,
- struct pipe_surface *zstencil,
- const float *clear_color,
- double clear_depth,
- unsigned clear_stencil);
+void lp_rast_destroy( struct lp_rasterizer * );
-/* Begining of each tile:
- */
-void lp_rast_start_tile( struct lp_rasterizer *,
- unsigned x,
- unsigned y );
+unsigned lp_rast_get_num_threads( struct lp_rasterizer * );
+
+void lp_rasterize_scene( struct lp_rasterizer *rast,
+ struct lp_scene *scene,
+ const struct pipe_framebuffer_state *fb,
+ bool write_depth );
const struct lp_rast_shader_inputs *shade_tile;
const struct lp_rast_triangle *triangle;
const struct lp_rast_state *set_state;
+ uint8_t clear_color[4];
+ unsigned clear_zstencil;
+ struct lp_fence *fence;
};
-/* Binnable Commands:
+/* Cast wrappers. Hopefully these compile to noops!
+ */
+static INLINE union lp_rast_cmd_arg
+lp_rast_arg_inputs( const struct lp_rast_shader_inputs *shade_tile )
+{
+ union lp_rast_cmd_arg arg;
+ arg.shade_tile = shade_tile;
+ return arg;
+}
+
+static INLINE union lp_rast_cmd_arg
+lp_rast_arg_triangle( const struct lp_rast_triangle *triangle )
+{
+ union lp_rast_cmd_arg arg;
+ arg.triangle = triangle;
+ return arg;
+}
+
+static INLINE union lp_rast_cmd_arg
+lp_rast_arg_state( const struct lp_rast_state *state )
+{
+ union lp_rast_cmd_arg arg;
+ arg.set_state = state;
+ return arg;
+}
+
+static INLINE union lp_rast_cmd_arg
+lp_rast_arg_fence( struct lp_fence *fence )
+{
+ union lp_rast_cmd_arg arg;
+ arg.fence = fence;
+ return arg;
+}
+
+
+static INLINE union lp_rast_cmd_arg
+lp_rast_arg_null( void )
+{
+ union lp_rast_cmd_arg arg;
+ arg.set_state = NULL;
+ return arg;
+}
+
+
+
+/**
+ * Binnable Commands.
+ * These get put into bins by the setup code and are called when
+ * the bins are executed.
*/
-void lp_rast_clear_color( struct lp_rasterizer *,
- const union lp_rast_cmd_arg *);
-
-void lp_rast_clear_zstencil( struct lp_rasterizer *,
- const union lp_rast_cmd_arg *);
-
-void lp_rast_load_color( struct lp_rasterizer *,
- const union lp_rast_cmd_arg *);
-
-void lp_rast_load_zstencil( struct lp_rasterizer *,
- const union lp_rast_cmd_arg *);
-
-void lp_rast_set_state( struct lp_rasterizer *,
- const union lp_rast_cmd_arg * );
-void lp_rast_triangle( struct lp_rasterizer *,
- const union lp_rast_cmd_arg * );
+void lp_rast_clear_color( struct lp_rasterizer_task *,
+ const union lp_rast_cmd_arg );
-void lp_rast_shade_tile( struct lp_rasterizer *,
- const union lp_rast_cmd_arg * );
+void lp_rast_clear_zstencil( struct lp_rasterizer_task *,
+ const union lp_rast_cmd_arg );
-void lp_rast_store_color( struct lp_rasterizer *,
- const union lp_rast_cmd_arg *);
+void lp_rast_load_color( struct lp_rasterizer_task *,
+ const union lp_rast_cmd_arg );
-void lp_rast_store_zstencil( struct lp_rasterizer *,
- const union lp_rast_cmd_arg *);
+void lp_rast_set_state( struct lp_rasterizer_task *,
+ const union lp_rast_cmd_arg );
+void lp_rast_triangle( struct lp_rasterizer_task *,
+ const union lp_rast_cmd_arg );
-/* Shutdown:
- */
-void lp_rast_destroy( struct lp_rasterizer * );
+void lp_rast_shade_tile( struct lp_rasterizer_task *,
+ const union lp_rast_cmd_arg );
+void lp_rast_fence( struct lp_rasterizer_task *,
+ const union lp_rast_cmd_arg );
#endif
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