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/**************************************************************************
*
* Copyright 2007 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 "main/imports.h"
#include "main/context.h"
#include "main/extensions.h"
#include "main/macros.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "st_context.h"
#include "st_extensions.h"
static int _min(int a, int b)
{
return (a < b) ? a : b;
}
static float _maxf(float a, float b)
{
return (a > b) ? a : b;
}
static int _clamp(int a, int min, int max)
{
if (a < min)
return min;
else if (a > max)
return max;
else
return a;
}
/**
* Query driver to get implementation limits.
* Note that we have to limit/clamp against Mesa's internal limits too.
*/
void st_init_limits(struct st_context *st)
{
struct pipe_screen *screen = st->pipe->screen;
struct gl_constants *c = &st->ctx->Const;
c->MaxTextureLevels
= _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
MAX_TEXTURE_LEVELS);
c->Max3DTextureLevels
= _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
MAX_3D_TEXTURE_LEVELS);
c->MaxCubeTextureLevels
= _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
MAX_CUBE_TEXTURE_LEVELS);
c->MaxTextureRectSize
= _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
c->MaxTextureUnits
= c->MaxTextureImageUnits
= c->MaxTextureCoordUnits
= _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS),
MAX_TEXTURE_IMAGE_UNITS);
c->MaxDrawBuffers
= _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
1, MAX_DRAW_BUFFERS);
c->MaxLineWidth
= _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH));
c->MaxLineWidthAA
= _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA));
c->MaxPointSize
= _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH));
c->MaxPointSizeAA
= _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA));
c->MaxTextureMaxAnisotropy
= _maxf(2.0f, screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_ANISOTROPY));
c->MaxTextureLodBias
= screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_LOD_BIAS);
c->MaxDrawBuffers
= CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
1, MAX_DRAW_BUFFERS);
}
/**
* XXX this needs careful review
*/
void st_init_extensions(struct st_context *st)
{
struct pipe_screen *screen = st->pipe->screen;
GLcontext *ctx = st->ctx;
/*
* Extensions that are supported by all Gallium drivers:
*/
ctx->Extensions.ARB_multisample = GL_TRUE; /* API support */
ctx->Extensions.ARB_fragment_program = GL_TRUE;
ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
ctx->Extensions.ARB_texture_compression = GL_TRUE; /* API support only */
ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; /* XXX temp */
ctx->Extensions.ARB_vertex_program = GL_TRUE;
ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;
ctx->Extensions.EXT_blend_color = GL_TRUE;
ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
ctx->Extensions.EXT_blend_minmax = GL_TRUE;
ctx->Extensions.EXT_blend_subtract = GL_TRUE;
ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
ctx->Extensions.EXT_fog_coord = GL_TRUE;
ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;
ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
ctx->Extensions.EXT_point_parameters = GL_TRUE;
ctx->Extensions.EXT_secondary_color = GL_TRUE;
ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
ctx->Extensions.EXT_texture_env_add = GL_TRUE;
ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
ctx->Extensions.NV_blend_square = GL_TRUE;
ctx->Extensions.NV_texgen_reflection = GL_TRUE;
ctx->Extensions.SGI_color_matrix = GL_TRUE;
ctx->Extensions.SGIS_generate_mipmap = GL_TRUE; /* XXX temp */
/*
* Extensions that depend on the driver/hardware:
*/
if (screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS) > 0) {
ctx->Extensions.ARB_draw_buffers = GL_TRUE;
}
if (screen->get_param(screen, PIPE_CAP_GLSL)) {
ctx->Extensions.ARB_fragment_shader = GL_TRUE;
ctx->Extensions.ARB_vertex_shader = GL_TRUE;
ctx->Extensions.ARB_shader_objects = GL_TRUE;
ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
}
if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
ctx->Extensions.NV_texture_rectangle = GL_TRUE;
}
if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS) > 1) {
ctx->Extensions.ARB_multitexture = GL_TRUE;
}
if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
ctx->Extensions.ATI_separate_stencil = GL_TRUE;
}
if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
}
if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
ctx->Extensions.ARB_point_sprite = GL_TRUE;
ctx->Extensions.NV_point_sprite = GL_TRUE;
}
if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
ctx->Extensions.ARB_occlusion_query = GL_TRUE;
}
if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
ctx->Extensions.ARB_depth_texture = GL_TRUE;
ctx->Extensions.ARB_shadow = GL_TRUE;
ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
/*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
}
if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
PIPE_TEXTURE)) {
ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
}
#if 01
if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
PIPE_TEXTURE)) {
ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
}
#endif
if (screen->is_format_supported(screen, PIPE_FORMAT_YCBCR, PIPE_TEXTURE) ||
screen->is_format_supported(screen, PIPE_FORMAT_YCBCR_REV, PIPE_TEXTURE)) {
ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
}
}
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