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/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
*
* 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
* on 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
* THE AUTHOR(S) AND/OR THEIR 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 "r300_context.h"
static boolean r300_draw_range_elements(struct pipe_context* pipe,
struct pipe_buffer* indexBuffer,
unsigned indexSize,
unsigned minIndex,
unsigned maxIndex,
unsigned mode,
unsigned start,
unsigned count)
{
struct r300_context* r300 = r300_context(pipe);
int i;
if (r300->dirty_state) {
r300_emit_dirty_state(r300);
}
for (i = 0; i < r300->vertex_buffer_count; i++) {
void* buf = pipe_buffer_map(pipe->screen,
r300->vertex_buffers[i].buffer,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_vertex_buffer(r300->draw, i, buf);
}
if (indexBuffer) {
void* indices = pipe_buffer_map(pipe->screen, indexBuffer,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_element_buffer_range(r300->draw, indexSize,
minIndex, maxIndex, indices);
} else {
draw_set_mapped_element_buffer(r300->draw, 0, NULL);
}
draw_set_mapped_constant_buffer(r300->draw,
r300->shader_constants[PIPE_SHADER_VERTEX].constants,
r300->shader_constants[PIPE_SHADER_VERTEX].user_count *
(sizeof(float) * 4));
/* Abandon all hope, ye who enter here. */
draw_arrays(r300->draw, mode, start, count);
for (i = 0; i < r300->vertex_buffer_count; i++) {
pipe_buffer_unmap(pipe->screen, r300->vertex_buffers[i].buffer);
draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
}
if (indexBuffer) {
pipe_buffer_unmap(pipe->screen, indexBuffer);
draw_set_mapped_element_buffer_range(r300->draw, 0, start,
start + count - 1, NULL);
}
return true;
}
static boolean r300_draw_elements(struct pipe_context* pipe,
struct pipe_buffer* indexBuffer,
unsigned indexSize, unsigned mode,
unsigned start, unsigned count)
{
return r300_draw_range_elements(pipe, indexBuffer, indexSize, 0, ~0,
mode, start, count);
}
static boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
unsigned start, unsigned count)
{
return r300_draw_elements(pipe, NULL, 0, mode, start, count);
}
static void r300_destroy_context(struct pipe_context* context) {
struct r300_context* r300 = r300_context(context);
draw_destroy(r300->draw);
FREE(r300->blend_color_state);
FREE(r300->scissor_state);
FREE(r300);
}
struct pipe_context* r300_create_context(struct pipe_screen* screen,
struct pipe_winsys* winsys,
struct r300_winsys* r300_winsys)
{
struct r300_context* r300 = CALLOC_STRUCT(r300_context);
if (!r300)
return NULL;
r300->winsys = r300_winsys;
r300->context.winsys = winsys;
r300->context.screen = r300_create_screen(winsys, r300_winsys);
r300->context.destroy = r300_destroy_context;
r300->context.clear = r300_clear;
r300->context.draw_arrays = r300_draw_arrays;
r300->context.draw_elements = r300_draw_elements;
r300->context.draw_range_elements = r300_draw_range_elements;
r300->draw = draw_create();
draw_set_rasterize_stage(r300->draw, r300_draw_swtcl_stage(r300));
r300->blend_color_state = CALLOC_STRUCT(r300_blend_color_state);
r300->scissor_state = CALLOC_STRUCT(r300_scissor_state);
r300_init_flush_functions(r300);
r300_init_surface_functions(r300);
r300_init_state_functions(r300);
r300->dirty_state = R300_NEW_KITCHEN_SINK;
r300->dirty_hw++;
return &r300->context;
}
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