1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "main/imports.h"
29 #include "main/context.h"
30 #include "main/extensions.h"
31 #include "main/macros.h"
33 #include "pipe/p_context.h"
34 #include "pipe/p_defines.h"
35 #include "pipe/p_screen.h"
37 #include "st_context.h"
38 #include "st_extensions.h"
41 static int _min(int a
, int b
)
43 return (a
< b
) ? a
: b
;
46 static float _maxf(float a
, float b
)
48 return (a
> b
) ? a
: b
;
51 static int _clamp(int a
, int min
, int max
)
63 * Query driver to get implementation limits.
64 * Note that we have to limit/clamp against Mesa's internal limits too.
66 void st_init_limits(struct st_context
*st
)
68 struct pipe_screen
*screen
= st
->pipe
->screen
;
69 struct gl_constants
*c
= &st
->ctx
->Const
;
72 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
),
76 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_3D_LEVELS
),
77 MAX_3D_TEXTURE_LEVELS
);
79 c
->MaxCubeTextureLevels
80 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS
),
81 MAX_CUBE_TEXTURE_LEVELS
);
84 = _min(1 << (c
->MaxTextureLevels
- 1), MAX_TEXTURE_RECT_SIZE
);
87 = c
->MaxTextureImageUnits
88 = c
->MaxTextureCoordUnits
89 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS
),
90 MAX_TEXTURE_IMAGE_UNITS
);
93 = _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
97 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_LINE_WIDTH
));
99 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_LINE_WIDTH_AA
));
102 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_POINT_WIDTH
));
104 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_POINT_WIDTH_AA
));
106 c
->MaxTextureMaxAnisotropy
107 = _maxf(2.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_TEXTURE_ANISOTROPY
));
110 = screen
->get_paramf(screen
, PIPE_CAP_MAX_TEXTURE_LOD_BIAS
);
113 = CLAMP(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
114 1, MAX_DRAW_BUFFERS
);
119 * XXX this needs careful review
121 void st_init_extensions(struct st_context
*st
)
123 struct pipe_screen
*screen
= st
->pipe
->screen
;
124 GLcontext
*ctx
= st
->ctx
;
127 * Extensions that are supported by all Gallium drivers:
129 ctx
->Extensions
.ARB_multisample
= GL_TRUE
; /* API support */
130 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
131 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
; /* XXX temp */
132 ctx
->Extensions
.ARB_texture_compression
= GL_TRUE
; /* API support only */
133 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
134 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
135 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
136 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
137 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
138 ctx
->Extensions
.ARB_vertex_buffer_object
= GL_TRUE
;
140 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
141 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
142 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
143 ctx
->Extensions
.EXT_blend_logic_op
= GL_TRUE
;
144 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
145 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
146 ctx
->Extensions
.EXT_framebuffer_blit
= GL_TRUE
;
147 ctx
->Extensions
.EXT_framebuffer_object
= GL_TRUE
;
148 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
149 ctx
->Extensions
.EXT_multi_draw_arrays
= GL_TRUE
;
150 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
151 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
152 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
153 ctx
->Extensions
.EXT_stencil_wrap
= GL_TRUE
;
154 ctx
->Extensions
.EXT_texture_env_add
= GL_TRUE
;
155 ctx
->Extensions
.EXT_texture_env_combine
= GL_TRUE
;
156 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
157 ctx
->Extensions
.EXT_texture_lod_bias
= GL_TRUE
;
159 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
160 ctx
->Extensions
.NV_texgen_reflection
= GL_TRUE
;
162 ctx
->Extensions
.SGI_color_matrix
= GL_TRUE
;
163 ctx
->Extensions
.SGIS_generate_mipmap
= GL_TRUE
; /* XXX temp */
166 * Extensions that depend on the driver/hardware:
168 if (screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
) > 0) {
169 ctx
->Extensions
.ARB_draw_buffers
= GL_TRUE
;
172 if (screen
->get_param(screen
, PIPE_CAP_GLSL
)) {
173 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
174 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
175 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
176 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
177 ctx
->Extensions
.ARB_shading_language_120
= GL_TRUE
;
180 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_MIRROR_REPEAT
) > 0) {
181 ctx
->Extensions
.ARB_texture_mirrored_repeat
= GL_TRUE
;
184 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_MIRROR_CLAMP
) > 0) {
185 ctx
->Extensions
.EXT_texture_mirror_clamp
= GL_TRUE
;
188 if (screen
->get_param(screen
, PIPE_CAP_NPOT_TEXTURES
)) {
189 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
190 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
193 if (screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS
) > 1) {
194 ctx
->Extensions
.ARB_multitexture
= GL_TRUE
;
197 if (screen
->get_param(screen
, PIPE_CAP_TWO_SIDED_STENCIL
)) {
198 ctx
->Extensions
.ATI_separate_stencil
= GL_TRUE
;
201 if (screen
->get_param(screen
, PIPE_CAP_ANISOTROPIC_FILTER
)) {
202 ctx
->Extensions
.EXT_texture_filter_anisotropic
= GL_TRUE
;
205 if (screen
->get_param(screen
, PIPE_CAP_POINT_SPRITE
)) {
206 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
207 ctx
->Extensions
.NV_point_sprite
= GL_TRUE
;
210 if (screen
->get_param(screen
, PIPE_CAP_OCCLUSION_QUERY
)) {
211 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
214 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_SHADOW_MAP
)) {
215 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
216 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
217 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
218 /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
221 /* GL_EXT_packed_depth_stencil requires both the ability to render to
222 * a depth/stencil buffer and texture from depth/stencil source.
224 if (screen
->is_format_supported(screen
, PIPE_FORMAT_Z24S8_UNORM
,
226 PIPE_TEXTURE_USAGE_DEPTH_STENCIL
, 0) &&
227 screen
->is_format_supported(screen
, PIPE_FORMAT_Z24S8_UNORM
,
229 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
230 ctx
->Extensions
.EXT_packed_depth_stencil
= GL_TRUE
;
232 else if (screen
->is_format_supported(screen
, PIPE_FORMAT_S8Z24_UNORM
,
234 PIPE_TEXTURE_USAGE_DEPTH_STENCIL
, 0) &&
235 screen
->is_format_supported(screen
, PIPE_FORMAT_S8Z24_UNORM
,
237 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
238 ctx
->Extensions
.EXT_packed_depth_stencil
= GL_TRUE
;
241 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R8G8B8A8_SRGB
,
243 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
244 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
248 if (screen
->is_format_supported(screen
, PIPE_FORMAT_DXT5_RGBA
,
250 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
251 ctx
->Extensions
.EXT_texture_compression_s3tc
= GL_TRUE
;
254 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR
,
256 PIPE_TEXTURE_USAGE_SAMPLER
, 0) ||
257 screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR_REV
,
259 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
260 ctx
->Extensions
.MESA_ycbcr_texture
= GL_TRUE
;