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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
#include "i915_context.h"
#include "i915_winsys.h"
#include "i915_state.h"
#include "i915_batch.h"
#include "i915_texture.h"
#include "i915_reg.h"
#include "draw/draw_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_winsys.h"
#include "pipe/p_util.h"
#include "pipe/p_screen.h"
static void i915_destroy( struct pipe_context *pipe )
{
struct i915_context *i915 = i915_context( pipe );
draw_destroy( i915->draw );
FREE( i915 );
}
static boolean
i915_draw_range_elements(struct pipe_context *pipe,
struct pipe_buffer *indexBuffer,
unsigned indexSize,
unsigned min_index,
unsigned max_index,
unsigned prim, unsigned start, unsigned count)
{
struct i915_context *i915 = i915_context( pipe );
struct draw_context *draw = i915->draw;
unsigned i;
if (i915->dirty)
i915_update_derived( i915 );
/*
* Map vertex buffers
*/
for (i = 0; i < i915->num_vertex_buffers; i++) {
void *buf
= pipe->winsys->buffer_map(pipe->winsys,
i915->vertex_buffer[i].buffer,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_vertex_buffer(draw, i, buf);
}
/* Map index buffer, if present */
if (indexBuffer) {
void *mapped_indexes
= pipe->winsys->buffer_map(pipe->winsys, indexBuffer,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_element_buffer_range(draw, indexSize,
min_index,
max_index,
mapped_indexes);
}
else {
/* no index/element buffer */
draw_set_mapped_element_buffer(draw, 0, NULL);
}
draw_set_mapped_constant_buffer(draw,
i915->current.constants[PIPE_SHADER_VERTEX],
( i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
4 * sizeof(float) ));
/* draw! */
draw_arrays(i915->draw, prim, start, count);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < i915->num_vertex_buffers; i++) {
pipe->winsys->buffer_unmap(pipe->winsys, i915->vertex_buffer[i].buffer);
draw_set_mapped_vertex_buffer(draw, i, NULL);
}
if (indexBuffer) {
pipe->winsys->buffer_unmap(pipe->winsys, indexBuffer);
draw_set_mapped_element_buffer_range(draw, 0, start, start + count - 1, NULL);
}
return TRUE;
}
static boolean
i915_draw_elements( struct pipe_context *pipe,
struct pipe_buffer *indexBuffer,
unsigned indexSize,
unsigned prim, unsigned start, unsigned count)
{
return i915_draw_range_elements( pipe, indexBuffer,
indexSize,
0, 0xffffffff,
prim, start, count );
}
static boolean i915_draw_arrays( struct pipe_context *pipe,
unsigned prim, unsigned start, unsigned count)
{
return i915_draw_elements(pipe, NULL, 0, prim, start, count);
}
struct pipe_context *i915_create_context( struct pipe_screen *screen,
struct pipe_winsys *pipe_winsys,
struct i915_winsys *i915_winsys )
{
struct i915_context *i915;
i915 = CALLOC_STRUCT(i915_context);
if (i915 == NULL)
return NULL;
i915->winsys = i915_winsys;
i915->pipe.winsys = pipe_winsys;
i915->pipe.screen = screen;
i915->pipe.destroy = i915_destroy;
i915->pipe.clear = i915_clear;
i915->pipe.draw_arrays = i915_draw_arrays;
i915->pipe.draw_elements = i915_draw_elements;
i915->pipe.draw_range_elements = i915_draw_range_elements;
/*
* Create drawing context and plug our rendering stage into it.
*/
i915->draw = draw_create();
assert(i915->draw);
if (!debug_get_bool_option("I915_NO_VBUF", FALSE)) {
draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
}
else {
draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
}
i915_init_surface_functions(i915);
i915_init_state_functions(i915);
i915_init_flush_functions(i915);
i915_init_texture_functions(i915);
draw_install_aaline_stage(i915->draw, &i915->pipe);
draw_install_aapoint_stage(i915->draw, &i915->pipe);
i915->dirty = ~0;
i915->hardware_dirty = ~0;
/* Batch stream debugging is a bit hacked up at the moment:
*/
i915->batch = i915_winsys->batch_get(i915_winsys);
i915->batch->winsys = i915_winsys;
return &i915->pipe;
}
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