/**************************************************************************
*
* 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_state.h"
#include "i915_screen.h"
#include "i915_batch.h"
#include "draw/draw_context.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "pipe/p_screen.h"
/*
* Draw functions
*/
static void
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_buffer_map(pipe->screen, 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_buffer_map(pipe->screen, indexBuffer,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_element_buffer_range(draw, indexSize,
min_index,
max_index,
mapped_indexes);
} else {
draw_set_mapped_element_buffer(draw, 0, NULL);
}
draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
i915->current.constants[PIPE_SHADER_VERTEX],
(i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
4 * sizeof(float)));
/*
* Do the drawing
*/
draw_arrays(i915->draw, prim, start, count);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < i915->num_vertex_buffers; i++) {
pipe_buffer_unmap(pipe->screen, i915->vertex_buffer[i].buffer);
draw_set_mapped_vertex_buffer(draw, i, NULL);
}
if (indexBuffer) {
pipe_buffer_unmap(pipe->screen, indexBuffer);
draw_set_mapped_element_buffer_range(draw, 0, start, start + count - 1, NULL);
}
}
static void
i915_draw_elements(struct pipe_context *pipe,
struct pipe_buffer *indexBuffer,
unsigned indexSize,
unsigned prim, unsigned start, unsigned count)
{
i915_draw_range_elements(pipe, indexBuffer,
indexSize,
0, 0xffffffff,
prim, start, count);
}
static void
i915_draw_arrays(struct pipe_context *pipe,
unsigned prim, unsigned start, unsigned count)
{
i915_draw_elements(pipe, NULL, 0, prim, start, count);
}
/*
* Is referenced functions
*/
static unsigned int
i915_is_texture_referenced(struct pipe_context *pipe,
struct pipe_texture *texture,
unsigned face, unsigned level)
{
/**
* FIXME: Return the corrent result. We can't alays return referenced
* since it causes a double flush within the vbo module.
*/
#if 0
return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
#else
return 0;
#endif
}
static unsigned int
i915_is_buffer_referenced(struct pipe_context *pipe,
struct pipe_buffer *buf)
{
/*
* Since we never expose hardware buffers to the state tracker
* they can never be referenced, so this isn't a lie
*/
return 0;
}
/*
* Generic context functions
*/
static void i915_destroy(struct pipe_context *pipe)
{
struct i915_context *i915 = i915_context(pipe);
int i;
draw_destroy(i915->draw);
if(i915->batch)
i915->iws->batchbuffer_destroy(i915->batch);
/* unbind framebuffer */
for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
}
pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
FREE(i915);
}
struct pipe_context *
i915_create_context(struct pipe_screen *screen, void *priv)
{
struct i915_context *i915;
i915 = CALLOC_STRUCT(i915_context);
if (i915 == NULL)
return NULL;
i915->iws = i915_screen(screen)->iws;
i915->base.winsys = NULL;
i915->base.screen = screen;
i915->base.priv = priv;
i915->base.destroy = i915_destroy;
i915->base.clear = i915_clear;
i915->base.draw_arrays = i915_draw_arrays;
i915->base.draw_elements = i915_draw_elements;
i915->base.draw_range_elements = i915_draw_range_elements;
i915->base.is_texture_referenced = i915_is_texture_referenced;
i915->base.is_buffer_referenced = i915_is_buffer_referenced;
/*
* Create drawing context and plug our rendering stage into it.
*/
i915->draw = draw_create(&i915->base);
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);
draw_install_aaline_stage(i915->draw, &i915->base);
draw_install_aapoint_stage(i915->draw, &i915->base);
i915->dirty = ~0;
i915->hardware_dirty = ~0;
/* Batch stream debugging is a bit hacked up at the moment:
*/
i915->batch = i915->iws->batchbuffer_create(i915->iws);
return &i915->base;
}