309 lines
8.8 KiB
C
309 lines
8.8 KiB
C
/******************************************************************************
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Copyright (C) 2013 by Hugh Bailey <obs.jim@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#ifndef GL_SUBSYSTEM_H
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#define GL_SUBSYSTEM_H
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#include "util/darray.h"
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#include "graphics/graphics.h"
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#include "glew/include/GL/glew.h"
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#include "gl-helpers.h"
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#include "gl-exports.h"
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struct gl_platform;
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struct gl_windowinfo;
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enum copy_type {
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COPY_TYPE_ARB,
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COPY_TYPE_NV,
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COPY_TYPE_FBO_BLIT
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};
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static inline GLint convert_gs_format(enum gs_color_format format)
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{
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switch (format) {
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case GS_A8: return GL_RGBA;
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case GS_R8: return GL_RED;
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case GS_RGBA: return GL_RGBA;
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case GS_BGRX: return GL_BGR;
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case GS_BGRA: return GL_BGRA;
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case GS_R10G10B10A2: return GL_RGBA;
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case GS_RGBA16: return GL_RGBA;
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case GS_R16: return GL_RED;
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case GS_RGBA16F: return GL_RGBA;
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case GS_RGBA32F: return GL_RGBA;
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case GS_RG16F: return GL_RG;
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case GS_RG32F: return GL_RG;
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case GS_R16F: return GL_RED;
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case GS_R32F: return GL_RED;
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case GS_DXT1: return GL_RGB;
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case GS_DXT3: return GL_RGBA;
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case GS_DXT5: return GL_RGBA;
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default: return 0;
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}
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}
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static inline GLint convert_gs_internal_format(enum gs_color_format format)
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{
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switch (format) {
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case GS_A8: return GL_R8; /* NOTE: use GL_TEXTURE_SWIZZLE_x */
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case GS_R8: return GL_R8;
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case GS_RGBA: return GL_RGBA;
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case GS_BGRX: return GL_RGBA;
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case GS_BGRA: return GL_RGBA;
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case GS_R10G10B10A2: return GL_RGB10_A2;
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case GS_RGBA16: return GL_RGBA16;
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case GS_R16: return GL_R16;
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case GS_RGBA16F: return GL_RGBA16F;
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case GS_RGBA32F: return GL_RGBA32F;
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case GS_RG16F: return GL_RG16F;
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case GS_RG32F: return GL_RG32F;
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case GS_R16F: return GL_R16F;
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case GS_R32F: return GL_R32F;
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case GS_DXT1: return GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
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case GS_DXT3: return GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
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case GS_DXT5: return GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
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default: return 0;
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}
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}
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static inline GLenum get_gl_format_type(enum color_format format)
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{
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switch (format) {
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case GS_A8: return GL_UNSIGNED_BYTE;
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case GS_R8: return GL_UNSIGNED_BYTE;
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case GS_RGBA: return GL_UNSIGNED_BYTE;
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case GS_BGRX: return GL_UNSIGNED_BYTE;
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case GS_BGRA: return GL_UNSIGNED_BYTE;
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case GS_R10G10B10A2: return GL_UNSIGNED_INT_10_10_10_2;
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case GS_RGBA16: return GL_UNSIGNED_SHORT;
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case GS_R16: return GL_UNSIGNED_SHORT;
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case GS_RGBA16F: return GL_UNSIGNED_SHORT;
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case GS_RGBA32F: return GL_FLOAT;
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case GS_RG16F: return GL_UNSIGNED_SHORT;
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case GS_RG32F: return GL_FLOAT;
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case GS_R16F: return GL_UNSIGNED_SHORT;
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case GS_R32F: return GL_FLOAT;
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case GS_DXT1: return GL_UNSIGNED_BYTE;
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case GS_DXT3: return GL_UNSIGNED_BYTE;
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case GS_DXT5: return GL_UNSIGNED_BYTE;
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default: return 0;
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}
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}
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static inline GLenum convert_zstencil_format(enum gs_zstencil_format format)
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{
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switch (format) {
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case GS_Z16: return GL_DEPTH_COMPONENT16;
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case GS_Z24_S8: return GL_DEPTH24_STENCIL8;
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case GS_Z32F: return GL_DEPTH_COMPONENT32F;
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case GS_Z32F_S8X24: return GL_DEPTH32F_STENCIL8;
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default: return 0;
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}
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}
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static inline GLenum convert_shader_type(enum shader_type type)
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{
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switch (type) {
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default:
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case SHADER_VERTEX: return GL_VERTEX_SHADER;
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case SHADER_PIXEL: return GL_FRAGMENT_SHADER;
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}
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}
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static inline void convert_filter(enum gs_sample_filter filter,
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GLint *min_filter, GLint *mag_filter)
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{
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switch (filter) {
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case GS_FILTER_ANISOTROPIC:
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*min_filter = GL_LINEAR_MIPMAP_LINEAR;
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*mag_filter = GL_LINEAR;
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break;
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default:
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case GS_FILTER_POINT:
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*min_filter = GL_NEAREST_MIPMAP_NEAREST;
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*mag_filter = GL_NEAREST;
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break;
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case GS_FILTER_LINEAR:
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*min_filter = GL_LINEAR_MIPMAP_LINEAR;
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*mag_filter = GL_LINEAR;
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break;
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case GS_FILTER_MIN_MAG_POINT_MIP_LINEAR:
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*min_filter = GL_NEAREST_MIPMAP_LINEAR;
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*mag_filter = GL_NEAREST;
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break;
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case GS_FILTER_MIN_POINT_MAG_LINEAR_MIP_POINT:
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*min_filter = GL_NEAREST_MIPMAP_NEAREST;
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*mag_filter = GL_LINEAR;
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break;
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case GS_FILTER_MIN_POINT_MAG_MIP_LINEAR:
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*min_filter = GL_NEAREST_MIPMAP_LINEAR;
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*mag_filter = GL_LINEAR;
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break;
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case GS_FILTER_MIN_LINEAR_MAG_MIP_POINT:
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*min_filter = GL_LINEAR_MIPMAP_NEAREST;
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*mag_filter = GL_NEAREST;
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break;
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case GS_FILTER_MIN_LINEAR_MAG_POINT_MIP_LINEAR:
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*min_filter = GL_LINEAR_MIPMAP_LINEAR;
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*mag_filter = GL_NEAREST;
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break;
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case GS_FILTER_MIN_MAG_LINEAR_MIP_POINT:
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*min_filter = GL_LINEAR_MIPMAP_NEAREST;
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*mag_filter = GL_LINEAR;
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break;
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}
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}
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static inline GLint convert_address_mode(enum gs_address_mode mode)
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{
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switch (mode) {
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default:
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case GS_ADDRESS_WRAP: return GL_REPEAT;
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case GS_ADDRESS_CLAMP: return GL_CLAMP;
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case GS_ADDRESS_MIRROR: return GL_MIRRORED_REPEAT;
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case GS_ADDRESS_BORDER: return GL_CLAMP_TO_BORDER;
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case GS_ADDRESS_MIRRORONCE: return GL_MIRROR_CLAMP_EXT;
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}
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}
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extern void convert_sampler_info(struct gs_sampler_state *sampler,
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struct gs_sampler_info *info);
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struct gs_sampler_state {
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GLint min_filter;
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GLint mag_filter;
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GLint address_u;
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GLint address_v;
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GLint address_w;
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GLint max_anisotropy;
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};
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struct shader_param {
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char *name;
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enum shader_param_type type;
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GLint param;
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GLint texture_id;
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size_t sampler_id;
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int array_count;
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struct gs_texture *texture;
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DARRAY(uint8_t) cur_value;
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DARRAY(uint8_t) def_value;
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bool changed;
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};
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struct gs_shader {
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device_t device;
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enum shader_type type;
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GLuint program;
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struct shader_param *viewproj;
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struct shader_param *world;
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DARRAY(struct gs_sampler_state) samplers;
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DARRAY(struct shader_param) params;
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};
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struct gs_vertex_buffer {
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GLuint vertex_buffer;
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GLuint normal_buffer;
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GLuint tangent_buffer;
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GLuint color_buffer;
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DARRAY(GLuint) uv_buffers;
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device_t device;
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bool dynamic;
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struct vb_data *data;
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};
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struct gs_texture {
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device_t device;
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enum gs_texture_type type;
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enum gs_color_format format;
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GLenum gl_format;
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GLint gl_internal_format;
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GLenum gl_type;
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GLuint texture;
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uint32_t levels;
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bool is_dynamic;
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bool is_render_target;
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bool gen_mipmaps;
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};
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struct gs_texture_2d {
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struct gs_texture base;
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uint32_t width;
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uint32_t height;
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bool gen_mipmaps;
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GLuint unpack_buffer;
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};
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struct gs_texture_cube {
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struct gs_texture base;
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uint32_t size;
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};
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struct gs_stage_surface {
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enum gs_color_format format;
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uint32_t width;
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uint32_t height;
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uint32_t bytes_per_pixel;
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GLenum gl_format;
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GLint gl_internal_format;
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GLenum gl_type;
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GLuint texture;
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GLuint pack_buffer;
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};
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struct gs_zstencil_buffer {
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device_t device;
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GLuint buffer;
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GLenum format;
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};
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struct gs_swap_chain {
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device_t device;
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struct gl_windowinfo *wi;
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struct gs_init_data info;
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};
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struct gs_device {
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struct gl_platform *plat;
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enum copy_type copy_type;
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struct gs_texture *cur_render_texture;
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int cur_render_side;
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struct gs_texture *cur_textures[GS_MAX_TEXTURES];
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struct gs_sampler *cur_samplers[GS_MAX_TEXTURES];
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struct gs_swap_chain *cur_swap;
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};
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extern struct gl_platform *gl_platform_create(device_t device,
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struct gs_init_data *info);
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extern struct gs_swap_chain *gl_platform_getswap(struct gl_platform *platform);
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extern void gl_platform_destroy(struct gl_platform *platform);
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extern struct gl_windowinfo *gl_windowinfo_create(struct gs_init_data *info);
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extern void gl_windowinfo_destroy(struct gl_windowinfo *wi);
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#endif
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