1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * Copyright (c) 2008 VMware, Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
29 #include "main/imports.h"
30 #include "main/context.h"
31 #include "main/extensions.h"
32 #include "main/macros.h"
34 #include "pipe/p_context.h"
35 #include "pipe/p_defines.h"
36 #include "pipe/p_screen.h"
38 #include "st_context.h"
39 #include "st_extensions.h"
42 static int _min(int a
, int b
)
44 return (a
< b
) ? a
: b
;
47 static float _maxf(float a
, float b
)
49 return (a
> b
) ? a
: b
;
52 static int _clamp(int a
, int min
, int max
)
64 * Query driver to get implementation limits.
65 * Note that we have to limit/clamp against Mesa's internal limits too.
67 void st_init_limits(struct st_context
*st
)
69 struct pipe_screen
*screen
= st
->pipe
->screen
;
70 struct gl_constants
*c
= &st
->ctx
->Const
;
73 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
),
77 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_3D_LEVELS
),
78 MAX_3D_TEXTURE_LEVELS
);
80 c
->MaxCubeTextureLevels
81 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS
),
82 MAX_CUBE_TEXTURE_LEVELS
);
85 = _min(1 << (c
->MaxTextureLevels
- 1), MAX_TEXTURE_RECT_SIZE
);
87 c
->MaxTextureImageUnits
88 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS
),
89 MAX_TEXTURE_IMAGE_UNITS
);
91 c
->MaxVertexTextureImageUnits
92 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS
),
93 MAX_VERTEX_TEXTURE_IMAGE_UNITS
);
95 c
->MaxTextureCoordUnits
96 = _min(c
->MaxTextureImageUnits
, MAX_TEXTURE_COORD_UNITS
);
98 c
->MaxTextureUnits
= _min(c
->MaxTextureImageUnits
, c
->MaxTextureCoordUnits
);
101 = _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
102 1, MAX_DRAW_BUFFERS
);
105 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_LINE_WIDTH
));
107 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_LINE_WIDTH_AA
));
110 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_POINT_WIDTH
));
112 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_POINT_WIDTH_AA
));
114 c
->MaxTextureMaxAnisotropy
115 = _maxf(2.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_TEXTURE_ANISOTROPY
));
118 = screen
->get_paramf(screen
, PIPE_CAP_MAX_TEXTURE_LOD_BIAS
);
121 = CLAMP(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
122 1, MAX_DRAW_BUFFERS
);
127 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
128 * which GL extensions are supported.
129 * Quite a few extensions are always supported because they are standard
130 * features or can be built on top of other gallium features.
131 * Some fine tuning may still be needed.
133 void st_init_extensions(struct st_context
*st
)
135 struct pipe_screen
*screen
= st
->pipe
->screen
;
136 GLcontext
*ctx
= st
->ctx
;
139 * Extensions that are supported by all Gallium drivers:
141 ctx
->Extensions
.ARB_copy_buffer
= GL_TRUE
;
142 ctx
->Extensions
.ARB_multisample
= GL_TRUE
;
143 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
144 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
; /* XXX temp */
145 ctx
->Extensions
.ARB_texture_compression
= GL_TRUE
;
146 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
147 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
148 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
149 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
150 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
151 ctx
->Extensions
.ARB_vertex_buffer_object
= GL_TRUE
;
153 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
154 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
155 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
156 ctx
->Extensions
.EXT_blend_logic_op
= GL_TRUE
;
157 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
158 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
159 ctx
->Extensions
.EXT_framebuffer_blit
= GL_TRUE
;
160 ctx
->Extensions
.EXT_framebuffer_object
= GL_TRUE
;
161 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
162 ctx
->Extensions
.EXT_multi_draw_arrays
= GL_TRUE
;
163 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
164 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
165 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
166 ctx
->Extensions
.EXT_stencil_wrap
= GL_TRUE
;
167 ctx
->Extensions
.EXT_texture_env_add
= GL_TRUE
;
168 ctx
->Extensions
.EXT_texture_env_combine
= GL_TRUE
;
169 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
170 ctx
->Extensions
.EXT_texture_lod_bias
= GL_TRUE
;
171 ctx
->Extensions
.EXT_vertex_array_bgra
= GL_TRUE
;
173 ctx
->Extensions
.APPLE_vertex_array_object
= GL_TRUE
;
175 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
176 ctx
->Extensions
.NV_texgen_reflection
= GL_TRUE
;
178 ctx
->Extensions
.SGI_color_matrix
= GL_TRUE
;
179 ctx
->Extensions
.SGIS_generate_mipmap
= GL_TRUE
;
182 * Extensions that depend on the driver/hardware:
184 if (screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
) > 0) {
185 ctx
->Extensions
.ARB_draw_buffers
= GL_TRUE
;
188 if (screen
->get_param(screen
, PIPE_CAP_GLSL
)) {
189 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
190 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
191 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
192 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
193 ctx
->Extensions
.ARB_shading_language_120
= GL_TRUE
;
196 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_MIRROR_REPEAT
) > 0) {
197 ctx
->Extensions
.ARB_texture_mirrored_repeat
= GL_TRUE
;
200 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_MIRROR_CLAMP
) > 0) {
201 ctx
->Extensions
.EXT_texture_mirror_clamp
= GL_TRUE
;
204 if (screen
->get_param(screen
, PIPE_CAP_NPOT_TEXTURES
)) {
205 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
206 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
209 if (screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS
) > 1) {
210 ctx
->Extensions
.ARB_multitexture
= GL_TRUE
;
213 if (screen
->get_param(screen
, PIPE_CAP_TWO_SIDED_STENCIL
)) {
214 ctx
->Extensions
.ATI_separate_stencil
= GL_TRUE
;
215 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
218 if (screen
->get_param(screen
, PIPE_CAP_ANISOTROPIC_FILTER
)) {
219 ctx
->Extensions
.EXT_texture_filter_anisotropic
= GL_TRUE
;
222 if (screen
->get_param(screen
, PIPE_CAP_POINT_SPRITE
)) {
223 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
224 ctx
->Extensions
.NV_point_sprite
= GL_TRUE
;
227 if (screen
->get_param(screen
, PIPE_CAP_OCCLUSION_QUERY
)) {
228 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
231 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_SHADOW_MAP
)) {
232 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
233 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
234 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
235 /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
238 /* GL_EXT_packed_depth_stencil requires both the ability to render to
239 * a depth/stencil buffer and texture from depth/stencil source.
241 if (screen
->is_format_supported(screen
, PIPE_FORMAT_Z24S8_UNORM
,
243 PIPE_TEXTURE_USAGE_DEPTH_STENCIL
, 0) &&
244 screen
->is_format_supported(screen
, PIPE_FORMAT_Z24S8_UNORM
,
246 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
247 ctx
->Extensions
.EXT_packed_depth_stencil
= GL_TRUE
;
249 else if (screen
->is_format_supported(screen
, PIPE_FORMAT_S8Z24_UNORM
,
251 PIPE_TEXTURE_USAGE_DEPTH_STENCIL
, 0) &&
252 screen
->is_format_supported(screen
, PIPE_FORMAT_S8Z24_UNORM
,
254 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
255 ctx
->Extensions
.EXT_packed_depth_stencil
= GL_TRUE
;
259 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R8G8B8A8_SRGB
,
261 PIPE_TEXTURE_USAGE_SAMPLER
, 0) ||
262 screen
->is_format_supported(screen
, PIPE_FORMAT_A8R8G8B8_SRGB
,
264 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
265 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
269 if (screen
->is_format_supported(screen
, PIPE_FORMAT_DXT5_RGBA
,
271 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
272 ctx
->Extensions
.EXT_texture_compression_s3tc
= GL_TRUE
;
276 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR
,
278 PIPE_TEXTURE_USAGE_SAMPLER
, 0) ||
279 screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR_REV
,
281 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
282 ctx
->Extensions
.MESA_ycbcr_texture
= GL_TRUE
;