diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_screen.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_screen.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c new file mode 100644 index 0000000000..d7354ad893 --- /dev/null +++ b/src/gallium/drivers/r300/r300_screen.c @@ -0,0 +1,282 @@ +/* + * 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: + return 4; + 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 or raise 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 (what a terrible guess) */ + 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 even moar formats */ +static boolean check_tex_2d_format(enum pipe_format format) +{ + switch (format) { + /* Colorbuffer */ + case PIPE_FORMAT_A8R8G8B8_UNORM: + /* Texture */ + case PIPE_FORMAT_I8_UNORM: + /* Z buffer */ + case PIPE_FORMAT_Z16_UNORM: + /* Z buffer with stencil */ + case PIPE_FORMAT_Z24S8_UNORM: + return TRUE; + + /* These formats are explicitly not supported, in order to keep + * people from wasting their time trying to implement them... */ + case PIPE_FORMAT_S8Z24_UNORM: + return FALSE; + + 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; +} |