1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "i915_context.h"
29 #include "i915_state.h"
30 #include "i915_screen.h"
31 #include "i915_batch.h"
33 #include "draw/draw_context.h"
34 #include "pipe/p_defines.h"
35 #include "util/u_inlines.h"
36 #include "util/u_memory.h"
37 #include "pipe/p_screen.h"
46 i915_draw_range_elements(struct pipe_context *pipe,
47 struct pipe_buffer *indexBuffer,
51 unsigned prim, unsigned start, unsigned count)
53 struct i915_context *i915 = i915_context(pipe);
54 struct draw_context *draw = i915->draw;
58 i915_update_derived(i915);
63 for (i = 0; i < i915->num_vertex_buffers; i++) {
64 void *buf = pipe_buffer_map(pipe->screen, i915->vertex_buffer[i].buffer,
65 PIPE_BUFFER_USAGE_CPU_READ);
66 draw_set_mapped_vertex_buffer(draw, i, buf);
70 * Map index buffer, if present
73 void *mapped_indexes = pipe_buffer_map(pipe->screen, indexBuffer,
74 PIPE_BUFFER_USAGE_CPU_READ);
75 draw_set_mapped_element_buffer_range(draw, indexSize,
80 draw_set_mapped_element_buffer(draw, 0, NULL);
84 draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
85 i915->current.constants[PIPE_SHADER_VERTEX],
86 (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
92 draw_arrays(i915->draw, prim, start, count);
95 * unmap vertex/index buffers
97 for (i = 0; i < i915->num_vertex_buffers; i++) {
98 pipe_buffer_unmap(pipe->screen, i915->vertex_buffer[i].buffer);
99 draw_set_mapped_vertex_buffer(draw, i, NULL);
103 pipe_buffer_unmap(pipe->screen, indexBuffer);
104 draw_set_mapped_element_buffer_range(draw, 0, start, start + count - 1, NULL);
109 i915_draw_elements(struct pipe_context *pipe,
110 struct pipe_buffer *indexBuffer,
112 unsigned prim, unsigned start, unsigned count)
114 i915_draw_range_elements(pipe, indexBuffer,
121 i915_draw_arrays(struct pipe_context *pipe,
122 unsigned prim, unsigned start, unsigned count)
124 i915_draw_elements(pipe, NULL, 0, prim, start, count);
129 * Is referenced functions
134 i915_is_texture_referenced(struct pipe_context *pipe,
135 struct pipe_texture *texture,
136 unsigned face, unsigned level)
139 * FIXME: Return the corrent result. We can't alays return referenced
140 * since it causes a double flush within the vbo module.
143 return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
150 i915_is_buffer_referenced(struct pipe_context *pipe,
151 struct pipe_buffer *buf)
154 * Since we never expose hardware buffers to the state tracker
155 * they can never be referenced, so this isn't a lie
162 * Generic context functions
166 static void i915_destroy(struct pipe_context *pipe)
168 struct i915_context *i915 = i915_context(pipe);
171 draw_destroy(i915->draw);
174 i915->iws->batchbuffer_destroy(i915->batch);
176 /* unbind framebuffer */
177 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
178 pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
180 pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
185 struct pipe_context *
186 i915_create_context(struct pipe_screen *screen, void *priv)
188 struct i915_context *i915;
190 i915 = CALLOC_STRUCT(i915_context);
194 i915->iws = i915_screen(screen)->iws;
195 i915->base.winsys = NULL;
196 i915->base.screen = screen;
197 i915->base.priv = priv;
199 i915->base.destroy = i915_destroy;
201 i915->base.clear = i915_clear;
203 i915->base.draw_arrays = i915_draw_arrays;
204 i915->base.draw_elements = i915_draw_elements;
205 i915->base.draw_range_elements = i915_draw_range_elements;
207 i915->base.is_texture_referenced = i915_is_texture_referenced;
208 i915->base.is_buffer_referenced = i915_is_buffer_referenced;
211 * Create drawing context and plug our rendering stage into it.
213 i915->draw = draw_create();
215 if (!debug_get_bool_option("I915_NO_VBUF", FALSE)) {
216 draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
218 draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
221 i915_init_surface_functions(i915);
222 i915_init_state_functions(i915);
223 i915_init_flush_functions(i915);
224 i915_init_texture_functions(i915);
226 draw_install_aaline_stage(i915->draw, &i915->base);
227 draw_install_aapoint_stage(i915->draw, &i915->base);
230 i915->hardware_dirty = ~0;
232 /* Batch stream debugging is a bit hacked up at the moment:
234 i915->batch = i915->iws->batchbuffer_create(i915->iws);