softpipe: add support for explicit early depth testing
[mesa.git] / src / gallium / drivers / softpipe / sp_context.h
1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
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5 *
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15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
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27
28 /* Authors: Keith Whitwell <keithw@vmware.com>
29 */
30
31 #ifndef SP_CONTEXT_H
32 #define SP_CONTEXT_H
33
34 #include "pipe/p_context.h"
35 #include "util/u_blitter.h"
36
37 #include "draw/draw_vertex.h"
38
39 #include "sp_quad_pipe.h"
40 #include "sp_setup.h"
41
42
43 /** Do polygon stipple in the draw module? */
44 #define DO_PSTIPPLE_IN_DRAW_MODULE 0
45
46 /** Do polygon stipple with the util module? */
47 #define DO_PSTIPPLE_IN_HELPER_MODULE 1
48
49
50 struct softpipe_vbuf_render;
51 struct draw_context;
52 struct draw_stage;
53 struct softpipe_tile_cache;
54 struct softpipe_tex_tile_cache;
55 struct sp_fragment_shader;
56 struct sp_vertex_shader;
57 struct sp_velems_state;
58 struct sp_so_state;
59
60 struct softpipe_context {
61 struct pipe_context pipe; /**< base class */
62
63 /** Constant state objects */
64 struct pipe_blend_state *blend;
65 struct pipe_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
66 struct pipe_depth_stencil_alpha_state *depth_stencil;
67 struct pipe_rasterizer_state *rasterizer;
68 struct sp_fragment_shader *fs;
69 struct sp_fragment_shader_variant *fs_variant;
70 struct sp_vertex_shader *vs;
71 struct sp_geometry_shader *gs;
72 struct sp_velems_state *velems;
73 struct sp_so_state *so;
74
75 /** Other rendering state */
76 struct pipe_blend_color blend_color;
77 struct pipe_blend_color blend_color_clamped;
78 struct pipe_stencil_ref stencil_ref;
79 struct pipe_clip_state clip;
80 struct pipe_resource *constants[PIPE_SHADER_TYPES][PIPE_MAX_CONSTANT_BUFFERS];
81 struct pipe_framebuffer_state framebuffer;
82 struct pipe_poly_stipple poly_stipple;
83 struct pipe_scissor_state scissors[PIPE_MAX_VIEWPORTS];
84 struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
85
86 struct pipe_viewport_state viewports[PIPE_MAX_VIEWPORTS];
87 struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
88 struct pipe_index_buffer index_buffer;
89 struct pipe_resource *mapped_vs_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS];
90 struct pipe_resource *mapped_gs_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS];
91
92 struct draw_so_target *so_targets[PIPE_MAX_SO_BUFFERS];
93 unsigned num_so_targets;
94
95 struct pipe_query_data_so_statistics so_stats;
96
97 struct pipe_query_data_pipeline_statistics pipeline_statistics;
98 unsigned active_statistics_queries;
99
100 unsigned num_samplers[PIPE_SHADER_TYPES];
101 unsigned num_sampler_views[PIPE_SHADER_TYPES];
102
103 unsigned num_vertex_buffers;
104
105 unsigned dirty; /**< Mask of SP_NEW_x flags */
106
107 /* Counter for occlusion queries. Note this supports overlapping
108 * queries.
109 */
110 uint64_t occlusion_count;
111 unsigned active_query_count;
112
113 /** Mapped vertex buffers */
114 ubyte *mapped_vbuffer[PIPE_MAX_ATTRIBS];
115
116 /** Mapped constant buffers */
117 const void *mapped_constants[PIPE_SHADER_TYPES][PIPE_MAX_CONSTANT_BUFFERS];
118 unsigned const_buffer_size[PIPE_SHADER_TYPES][PIPE_MAX_CONSTANT_BUFFERS];
119
120 /** Vertex format */
121 struct sp_setup_info setup_info;
122 struct vertex_info vertex_info;
123
124 /** Which vertex shader output slot contains point size */
125 int8_t psize_slot;
126
127 /** Which vertex shader output slot contains viewport index */
128 int8_t viewport_index_slot;
129
130 /** Which vertex shader output slot contains layer */
131 int8_t layer_slot;
132
133 /** The reduced version of the primitive supplied by the state tracker */
134 unsigned reduced_api_prim;
135
136 /** Derived information about which winding orders to cull */
137 unsigned cull_mode;
138
139 /**
140 * The reduced primitive after unfilled triangles, wide-line decomposition,
141 * etc, are taken into account. This is the primitive type that's actually
142 * rasterized.
143 */
144 unsigned reduced_prim;
145
146 /** Derived from scissor and surface bounds: */
147 struct pipe_scissor_state cliprect[PIPE_MAX_VIEWPORTS];
148
149 unsigned line_stipple_counter;
150
151 /** Conditional query object and mode */
152 struct pipe_query *render_cond_query;
153 uint render_cond_mode;
154 boolean render_cond_cond;
155
156 /** Polygon stipple items */
157 struct {
158 struct pipe_resource *texture;
159 struct pipe_sampler_state *sampler;
160 struct pipe_sampler_view *sampler_view;
161 } pstipple;
162
163 /** Software quad rendering pipeline */
164 struct {
165 struct quad_stage *shade;
166 struct quad_stage *depth_test;
167 struct quad_stage *blend;
168 struct quad_stage *pstipple;
169 struct quad_stage *first; /**< points to one of the above stages */
170 } quad;
171
172 /** TGSI exec things */
173 struct {
174 struct sp_tgsi_sampler *sampler[PIPE_SHADER_TYPES];
175 } tgsi;
176
177 struct tgsi_exec_machine *fs_machine;
178 /** whether early depth testing is enabled */
179 bool early_depth;
180
181 /** The primitive drawing context */
182 struct draw_context *draw;
183
184 /** Draw module backend */
185 struct vbuf_render *vbuf_backend;
186 struct draw_stage *vbuf;
187
188 struct blitter_context *blitter;
189
190 boolean dirty_render_cache;
191
192 struct softpipe_tile_cache *cbuf_cache[PIPE_MAX_COLOR_BUFS];
193 struct softpipe_tile_cache *zsbuf_cache;
194
195 unsigned tex_timestamp;
196
197 /*
198 * Texture caches for vertex, fragment, geometry stages.
199 * Don't use PIPE_SHADER_TYPES here to avoid allocating unused memory
200 * for compute shaders.
201 * XXX wouldn't it make more sense for the tile cache to just be part
202 * of sp_sampler_view?
203 */
204 struct softpipe_tex_tile_cache *tex_cache[PIPE_SHADER_GEOMETRY+1][PIPE_MAX_SHADER_SAMPLER_VIEWS];
205
206 unsigned dump_fs : 1;
207 unsigned dump_gs : 1;
208 unsigned no_rast : 1;
209 };
210
211
212 static inline struct softpipe_context *
213 softpipe_context( struct pipe_context *pipe )
214 {
215 return (struct softpipe_context *)pipe;
216 }
217
218
219 struct pipe_context *
220 softpipe_create_context(struct pipe_screen *, void *priv, unsigned flags);
221
222 struct pipe_resource *
223 softpipe_user_buffer_create(struct pipe_screen *screen,
224 void *ptr,
225 unsigned bytes,
226 unsigned bind_flags);
227
228 #define SP_UNREFERENCED 0
229 #define SP_REFERENCED_FOR_READ (1 << 0)
230 #define SP_REFERENCED_FOR_WRITE (1 << 1)
231
232 unsigned int
233 softpipe_is_resource_referenced( struct pipe_context *pipe,
234 struct pipe_resource *texture,
235 unsigned level, int layer);
236
237 #endif /* SP_CONTEXT_H */