/**************************************************************************
*
* 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 "pipe/draw/draw_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_winsys.h"
#include "pipe/p_util.h"
/**
* Query format support for creating a texture, drawing surface, etc.
* \param format the format to test
* \param type one of PIPE_TEXTURE, PIPE_SURFACE, PIPE_SCREEN_SURFACE
*/
static boolean
i915_is_format_supported( struct pipe_context *pipe,
enum pipe_format format, uint type )
{
static const enum pipe_format tex_supported[] = {
PIPE_FORMAT_R8G8B8A8_UNORM,
PIPE_FORMAT_A8R8G8B8_UNORM,
PIPE_FORMAT_R5G6B5_UNORM,
PIPE_FORMAT_U_L8,
PIPE_FORMAT_U_A8,
PIPE_FORMAT_U_I8,
PIPE_FORMAT_U_A8_L8,
PIPE_FORMAT_YCBCR,
PIPE_FORMAT_YCBCR_REV,
PIPE_FORMAT_S8Z24_UNORM,
PIPE_FORMAT_NONE /* list terminator */
};
static const enum pipe_format surface_supported[] = {
PIPE_FORMAT_A8R8G8B8_UNORM,
PIPE_FORMAT_R5G6B5_UNORM,
PIPE_FORMAT_S8Z24_UNORM,
PIPE_FORMAT_R16G16B16A16_SNORM,
PIPE_FORMAT_NONE /* list terminator */
};
static const enum pipe_format screen_surface_supported[] = {
PIPE_FORMAT_A8R8G8B8_UNORM,
PIPE_FORMAT_NONE /* list terminator */
};
const enum pipe_format *list;
uint i;
switch (type) {
case PIPE_TEXTURE:
list = tex_supported;
break;
case PIPE_SURFACE:
list = surface_supported;
break;
case PIPE_SCREEN_SURFACE:
list = screen_surface_supported;
break;
default:
assert(0);
}
for (i = 0; list[i] != PIPE_FORMAT_NONE; i++) {
if (list[i] == format)
return TRUE;
}
return FALSE;
}
static int
i915_get_param(struct pipe_context *pipe, int param)
{
switch (param) {
case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
return 8;
case PIPE_CAP_NPOT_TEXTURES:
return 1;
case PIPE_CAP_TWO_SIDED_STENCIL:
return 1;
case PIPE_CAP_GLSL:
return 0;
case PIPE_CAP_S3TC:
return 0;
case PIPE_CAP_ANISOTROPIC_FILTER:
return 0;
case PIPE_CAP_POINT_SPRITE:
return 0;
case PIPE_CAP_MAX_RENDER_TARGETS:
return 1;
case PIPE_CAP_OCCLUSION_QUERY:
return 0;
case PIPE_CAP_TEXTURE_SHADOW_MAP:
return 1;
case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
return 11; /* max 1024x1024 */
case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
return 8; /* max 128x128x128 */
case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
return 11; /* max 1024x1024 */
default:
return 0;
}
}
static float
i915_get_paramf(struct pipe_context *pipe, int param)
{
switch (param) {
case PIPE_CAP_MAX_LINE_WIDTH:
/* fall-through */
case PIPE_CAP_MAX_LINE_WIDTH_AA:
return 7.5;
case PIPE_CAP_MAX_POINT_WIDTH:
/* fall-through */
case PIPE_CAP_MAX_POINT_WIDTH_AA:
return 255.0;
case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
return 4.0;
case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
return 16.0;
default:
return 0;
}
}
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_elements( struct pipe_context *pipe,
struct pipe_buffer_handle *indexBuffer,
unsigned indexSize,
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 < PIPE_ATTRIB_MAX; i++) {
if (i915->vertex_buffer[i].buffer) {
void *buf
= pipe->winsys->buffer_map(pipe->winsys,
i915->vertex_buffer[i].buffer,
PIPE_BUFFER_FLAG_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_FLAG_READ);
draw_set_mapped_element_buffer(draw, indexSize, 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]);
/* draw! */
draw_arrays(i915->draw, prim, start, count);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
if (i915->vertex_buffer[i].buffer) {
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(draw, 0, NULL);
}
return TRUE;
}
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( struct pipe_winsys *pipe_winsys,
struct i915_winsys *i915_winsys,
unsigned pci_id )
{
struct i915_context *i915;
unsigned is_i945 = 0;
switch (pci_id) {
case PCI_CHIP_I915_G:
case PCI_CHIP_I915_GM:
break;
case PCI_CHIP_I945_G:
case PCI_CHIP_I945_GM:
case PCI_CHIP_I945_GME:
case PCI_CHIP_G33_G:
case PCI_CHIP_Q33_G:
case PCI_CHIP_Q35_G:
is_i945 = 1;
break;
default:
pipe_winsys->printf(pipe_winsys,
"%s: unknown pci id 0x%x, cannot create context\n",
__FUNCTION__, pci_id);
return NULL;
}
i915 = CALLOC_STRUCT(i915_context);
if (i915 == NULL)
return NULL;
i915->winsys = i915_winsys;
i915->pipe.winsys = pipe_winsys;
i915->pipe.destroy = i915_destroy;
i915->pipe.is_format_supported = i915_is_format_supported;
i915->pipe.get_param = i915_get_param;
i915->pipe.get_paramf = i915_get_paramf;
i915->pipe.clear = i915_clear;
i915->pipe.draw_arrays = i915_draw_arrays;
i915->pipe.draw_elements = i915_draw_elements;
/*
* Create drawing context and plug our rendering stage into it.
*/
i915->draw = draw_create();
assert(i915->draw);
if (GETENV("I915_VBUF")) {
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_string_functions(i915);
i915->pci_id = pci_id;
i915->flags.is_i945 = is_i945;
i915->pipe.texture_create = i915_texture_create;
i915->pipe.texture_release = i915_texture_release;
i915->dirty = ~0;
i915->hardware_dirty = ~0;
/* Batch stream debugging is a bit hacked up at the moment:
*/
i915->batch_start = NULL;
/*
* XXX we could plug GL selection/feedback into the drawing pipeline
* by specifying a different setup/render stage.
*/
return &i915->pipe;
}