/*
* 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_screen.h"
/* Return the identifier behind whom the brave coders responsible for this
* amalgamation of code, sweat, and duct tape, routinely obscure their names.
*
* ...I should have just put "Corbin Simpson", but I'm not that cool.
*
* (Or egotistical. Yet.) */
static const char* r300_get_vendor(struct pipe_screen* pscreen)
{
return "X.Org R300 Project";
}
static const char* chip_families[] = {
"R300",
"R350",
"R360",
"RV350",
"RV370",
"RV380",
"R420",
"R423",
"R430",
"R480",
"R481",
"RV410",
"RS400",
"RC410",
"RS480",
"RS482",
"RS690",
"RS740",
"RV515",
"R520",
"RV530",
"R580",
"RV560",
"RV570"
};
static const char* r300_get_name(struct pipe_screen* pscreen)
{
struct r300_screen* r300screen = r300_screen(pscreen);
return chip_families[r300screen->caps->family];
}
static int r300_get_param(struct pipe_screen* pscreen, int param)
{
struct r300_screen* r300screen = r300_screen(pscreen);
switch (param) {
/* XXX cases marked "IN THEORY" are possible on the hardware,
* but haven't been implemented yet. */
case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
/* XXX I'm told this goes up to 16 */
return 8;
case PIPE_CAP_NPOT_TEXTURES:
/* IN THEORY */
return 0;
case PIPE_CAP_TWO_SIDED_STENCIL:
if (r300screen->caps->is_r500) {
return 1;
} else {
return 0;
}
return 0;
case PIPE_CAP_GLSL:
/* IN THEORY */
return 0;
case PIPE_CAP_S3TC:
/* IN THEORY */
return 0;
case PIPE_CAP_ANISOTROPIC_FILTER:
/* IN THEORY */
return 0;
case PIPE_CAP_POINT_SPRITE:
/* IN THEORY */
return 0;
case PIPE_CAP_MAX_RENDER_TARGETS:
/* XXX 4 eventually */
return 1;
case PIPE_CAP_OCCLUSION_QUERY:
/* IN THEORY */
return 0;
case PIPE_CAP_TEXTURE_SHADOW_MAP:
/* IN THEORY */
return 0;
case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
if (r300screen->caps->is_r500) {
/* 13 == 4096x4096 */
return 13;
} else {
/* 12 == 2048x2048 */
return 12;
}
case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
/* So, technically, the limit is the same as above, but some math
* shows why this is silly. Assuming RGBA, 4cpp, we can see that
* 4096*4096*4096 = 64.0 GiB exactly, so it's not exactly
* practical. However, if at some point a game really wants this,
* then we can remove this limit. */
if (r300screen->caps->is_r500) {
/* 9 == 256x256x256 */
return 9;
} else {
/* 8 == 128*128*128 */
return 8;
}
case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
if (r300screen->caps->is_r500) {
/* 13 == 4096x4096 */
return 13;
} else {
/* 12 == 2048x2048 */
return 12;
}
case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
return 1;
case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
return 1;
case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
/* XXX guessing */
return 2;
default:
debug_printf("r300: Implementation error: Bad param %d\n",
param);
return 0;
}
}
static float r300_get_paramf(struct pipe_screen* pscreen, int param)
{
switch (param) {
case PIPE_CAP_MAX_LINE_WIDTH:
case PIPE_CAP_MAX_LINE_WIDTH_AA:
/* XXX this is the biggest thing that will fit in that register.
* Perhaps the actual rendering limits are less? */
return 10922.0f;
case PIPE_CAP_MAX_POINT_WIDTH:
case PIPE_CAP_MAX_POINT_WIDTH_AA:
/* XXX this is the biggest thing that will fit in that register.
* Perhaps the actual rendering limits are less? */
return 10922.0f;
case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
return 16.0f;
case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
return 16.0f;
default:
debug_printf("r300: Implementation error: Bad paramf %d\n",
param);
return 0.0f;
}
}
/* XXX moar formats */
static boolean check_tex_2d_format(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_A8R8G8B8_UNORM:
case PIPE_FORMAT_I8_UNORM:
return TRUE;
default:
debug_printf("r300: Warning: Got unknown format: %s, in %s\n",
pf_name(format), __FUNCTION__);
break;
}
return FALSE;
}
/* XXX moar targets */
static boolean r300_is_format_supported(struct pipe_screen* pscreen,
enum pipe_format format,
enum pipe_texture_target target,
unsigned tex_usage,
unsigned geom_flags)
{
switch (target) {
case PIPE_TEXTURE_2D:
return check_tex_2d_format(format);
default:
debug_printf("r300: Warning: Got unknown format target: %d\n",
format);
break;
}
return FALSE;
}
static void* r300_surface_map(struct pipe_screen* screen,
struct pipe_surface* surface,
unsigned flags)
{
struct r300_texture* tex = (struct r300_texture*)surface->texture;
char* map = pipe_buffer_map(screen, tex->buffer, flags);
if (!map) {
return NULL;
}
return map + surface->offset;
}
static void r300_surface_unmap(struct pipe_screen* screen,
struct pipe_surface* surface)
{
struct r300_texture* tex = (struct r300_texture*)surface->texture;
pipe_buffer_unmap(screen, tex->buffer);
}
static void r300_destroy_screen(struct pipe_screen* pscreen)
{
struct r300_screen* r300screen = r300_screen(pscreen);
FREE(r300screen->caps);
FREE(r300screen);
}
struct pipe_screen* r300_create_screen(struct pipe_winsys* winsys,
struct r300_winsys* r300_winsys)
{
struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
if (!r300screen || !caps)
return NULL;
caps->pci_id = r300_winsys->pci_id;
caps->num_frag_pipes = r300_winsys->gb_pipes;
r300_parse_chipset(caps);
r300screen->caps = caps;
r300screen->screen.winsys = winsys;
r300screen->screen.destroy = r300_destroy_screen;
r300screen->screen.get_name = r300_get_name;
r300screen->screen.get_vendor = r300_get_vendor;
r300screen->screen.get_param = r300_get_param;
r300screen->screen.get_paramf = r300_get_paramf;
r300screen->screen.is_format_supported = r300_is_format_supported;
r300screen->screen.surface_map = r300_surface_map;
r300screen->screen.surface_unmap = r300_surface_unmap;
r300_init_screen_texture_functions(&r300screen->screen);
u_simple_screen_init(&r300screen->screen);
return &r300screen->screen;
}