683 lines
14 KiB
C
683 lines
14 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 2 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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#pragma once
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#include <util/darray.h>
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#include <util/threading.h>
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#include <graphics/graphics.h>
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#include <graphics/device-exports.h>
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#include <graphics/matrix4.h>
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#include <glad/glad.h>
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#include "gl-helpers.h"
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struct gl_platform;
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struct gl_windowinfo;
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enum copy_type { COPY_TYPE_ARB, COPY_TYPE_NV, COPY_TYPE_FBO_BLIT };
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static inline GLenum 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:
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return GL_RED;
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case GS_R8:
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return GL_RED;
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case GS_RGBA:
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return GL_RGBA;
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case GS_BGRX:
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return GL_BGRA;
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case GS_BGRA:
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return GL_BGRA;
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case GS_R10G10B10A2:
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return GL_RGBA;
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case GS_RGBA16:
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return GL_RGBA;
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case GS_R16:
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return GL_RED;
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case GS_RGBA16F:
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return GL_RGBA;
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case GS_RGBA32F:
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return GL_RGBA;
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case GS_RG16F:
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return GL_RG;
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case GS_RG32F:
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return GL_RG;
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case GS_R8G8:
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return GL_RG;
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case GS_R16F:
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return GL_RED;
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case GS_R32F:
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return GL_RED;
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case GS_DXT1:
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return GL_RGB;
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case GS_DXT3:
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return GL_RGBA;
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case GS_DXT5:
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return GL_RGBA;
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case GS_RGBA_UNORM:
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return GL_RGBA;
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case GS_BGRX_UNORM:
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return GL_BGRA;
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case GS_BGRA_UNORM:
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return GL_BGRA;
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case GS_UNKNOWN:
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return 0;
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}
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return 0;
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}
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static inline GLenum 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:
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return GL_R8; /* NOTE: use GL_TEXTURE_SWIZZLE_x */
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case GS_R8:
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return GL_R8;
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case GS_RGBA:
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return GL_SRGB8_ALPHA8;
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case GS_BGRX:
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return GL_SRGB8;
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case GS_BGRA:
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return GL_SRGB8_ALPHA8;
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case GS_R10G10B10A2:
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return GL_RGB10_A2;
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case GS_RGBA16:
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return GL_RGBA16;
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case GS_R16:
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return GL_R16;
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case GS_RGBA16F:
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return GL_RGBA16F;
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case GS_RGBA32F:
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return GL_RGBA32F;
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case GS_RG16F:
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return GL_RG16F;
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case GS_RG32F:
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return GL_RG32F;
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case GS_R8G8:
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return GL_RG8;
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case GS_R16F:
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return GL_R16F;
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case GS_R32F:
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return GL_R32F;
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case GS_DXT1:
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return GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
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case GS_DXT3:
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return GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
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case GS_DXT5:
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return GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
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case GS_RGBA_UNORM:
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return GL_RGBA;
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case GS_BGRX_UNORM:
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return GL_RGB;
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case GS_BGRA_UNORM:
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return GL_RGBA;
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case GS_UNKNOWN:
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return 0;
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}
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return 0;
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}
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static inline GLenum get_gl_format_type(enum gs_color_format format)
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{
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switch (format) {
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case GS_A8:
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return GL_UNSIGNED_BYTE;
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case GS_R8:
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return GL_UNSIGNED_BYTE;
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case GS_RGBA:
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return GL_UNSIGNED_BYTE;
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case GS_BGRX:
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return GL_UNSIGNED_BYTE;
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case GS_BGRA:
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return GL_UNSIGNED_BYTE;
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case GS_R10G10B10A2:
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return GL_UNSIGNED_INT_2_10_10_10_REV;
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case GS_RGBA16:
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return GL_UNSIGNED_SHORT;
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case GS_R16:
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return GL_UNSIGNED_SHORT;
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case GS_RGBA16F:
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return GL_HALF_FLOAT;
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case GS_RGBA32F:
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return GL_FLOAT;
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case GS_RG16F:
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return GL_HALF_FLOAT;
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case GS_RG32F:
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return GL_FLOAT;
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case GS_R8G8:
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return GL_UNSIGNED_BYTE;
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case GS_R16F:
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return GL_HALF_FLOAT;
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case GS_R32F:
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return GL_FLOAT;
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case GS_DXT1:
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return GL_UNSIGNED_BYTE;
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case GS_DXT3:
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return GL_UNSIGNED_BYTE;
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case GS_DXT5:
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return GL_UNSIGNED_BYTE;
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case GS_RGBA_UNORM:
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return GL_UNSIGNED_BYTE;
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case GS_BGRX_UNORM:
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return GL_UNSIGNED_BYTE;
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case GS_BGRA_UNORM:
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return GL_UNSIGNED_BYTE;
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case GS_UNKNOWN:
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return 0;
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}
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return GL_UNSIGNED_BYTE;
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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:
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return GL_DEPTH_COMPONENT16;
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case GS_Z24_S8:
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return GL_DEPTH24_STENCIL8;
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case GS_Z32F:
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return GL_DEPTH_COMPONENT32F;
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case GS_Z32F_S8X24:
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return GL_DEPTH32F_STENCIL8;
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case GS_ZS_NONE:
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return 0;
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}
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return 0;
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}
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static inline GLenum convert_gs_depth_test(enum gs_depth_test test)
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{
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switch (test) {
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case GS_NEVER:
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return GL_NEVER;
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case GS_LESS:
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return GL_LESS;
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case GS_LEQUAL:
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return GL_LEQUAL;
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case GS_EQUAL:
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return GL_EQUAL;
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case GS_GEQUAL:
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return GL_GEQUAL;
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case GS_GREATER:
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return GL_GREATER;
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case GS_NOTEQUAL:
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return GL_NOTEQUAL;
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case GS_ALWAYS:
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return GL_ALWAYS;
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}
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return GL_NEVER;
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}
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static inline GLenum convert_gs_stencil_op(enum gs_stencil_op_type op)
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{
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switch (op) {
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case GS_KEEP:
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return GL_KEEP;
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case GS_ZERO:
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return GL_ZERO;
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case GS_REPLACE:
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return GL_REPLACE;
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case GS_INCR:
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return GL_INCR;
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case GS_DECR:
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return GL_DECR;
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case GS_INVERT:
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return GL_INVERT;
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}
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return GL_KEEP;
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}
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static inline GLenum convert_gs_stencil_side(enum gs_stencil_side side)
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{
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switch (side) {
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case GS_STENCIL_FRONT:
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return GL_FRONT;
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case GS_STENCIL_BACK:
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return GL_BACK;
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case GS_STENCIL_BOTH:
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return GL_FRONT_AND_BACK;
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}
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return GL_FRONT;
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}
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static inline GLenum convert_gs_blend_type(enum gs_blend_type type)
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{
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switch (type) {
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case GS_BLEND_ZERO:
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return GL_ZERO;
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case GS_BLEND_ONE:
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return GL_ONE;
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case GS_BLEND_SRCCOLOR:
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return GL_SRC_COLOR;
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case GS_BLEND_INVSRCCOLOR:
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return GL_ONE_MINUS_SRC_COLOR;
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case GS_BLEND_SRCALPHA:
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return GL_SRC_ALPHA;
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case GS_BLEND_INVSRCALPHA:
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return GL_ONE_MINUS_SRC_ALPHA;
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case GS_BLEND_DSTCOLOR:
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return GL_DST_COLOR;
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case GS_BLEND_INVDSTCOLOR:
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return GL_ONE_MINUS_DST_COLOR;
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case GS_BLEND_DSTALPHA:
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return GL_DST_ALPHA;
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case GS_BLEND_INVDSTALPHA:
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return GL_ONE_MINUS_DST_ALPHA;
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case GS_BLEND_SRCALPHASAT:
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return GL_SRC_ALPHA_SATURATE;
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}
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return GL_ONE;
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}
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static inline GLenum convert_gs_blend_op_type(enum gs_blend_op_type type)
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{
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switch (type) {
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case GS_BLEND_OP_ADD:
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return GL_FUNC_ADD;
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case GS_BLEND_OP_SUBTRACT:
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return GL_FUNC_SUBTRACT;
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case GS_BLEND_OP_REVERSE_SUBTRACT:
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return GL_FUNC_REVERSE_SUBTRACT;
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case GS_BLEND_OP_MIN:
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return GL_MIN;
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case GS_BLEND_OP_MAX:
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return GL_MAX;
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}
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return GL_FUNC_ADD;
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}
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static inline GLenum convert_shader_type(enum gs_shader_type type)
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{
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switch (type) {
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case GS_SHADER_VERTEX:
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return GL_VERTEX_SHADER;
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case GS_SHADER_PIXEL:
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return GL_FRAGMENT_SHADER;
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}
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return GL_VERTEX_SHADER;
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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_POINT:
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*min_filter = GL_NEAREST_MIPMAP_NEAREST;
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*mag_filter = GL_NEAREST;
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return;
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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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return;
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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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return;
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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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return;
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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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return;
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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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return;
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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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return;
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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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return;
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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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return;
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}
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*min_filter = GL_NEAREST_MIPMAP_NEAREST;
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*mag_filter = GL_NEAREST;
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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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case GS_ADDRESS_WRAP:
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return GL_REPEAT;
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case GS_ADDRESS_CLAMP:
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return GL_CLAMP_TO_EDGE;
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case GS_ADDRESS_MIRROR:
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return GL_MIRRORED_REPEAT;
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case GS_ADDRESS_BORDER:
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return GL_CLAMP_TO_BORDER;
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case GS_ADDRESS_MIRRORONCE:
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return GL_MIRROR_CLAMP_EXT;
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}
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return GL_REPEAT;
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}
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static inline GLenum convert_gs_topology(enum gs_draw_mode mode)
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{
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switch (mode) {
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case GS_POINTS:
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return GL_POINTS;
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case GS_LINES:
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return GL_LINES;
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case GS_LINESTRIP:
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return GL_LINE_STRIP;
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case GS_TRIS:
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return GL_TRIANGLES;
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case GS_TRISTRIP:
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return GL_TRIANGLE_STRIP;
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}
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return GL_POINTS;
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}
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extern void convert_sampler_info(struct gs_sampler_state *sampler,
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const struct gs_sampler_info *info);
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struct gs_sampler_state {
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gs_device_t *device;
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volatile long ref;
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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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static inline void samplerstate_addref(gs_samplerstate_t *ss)
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{
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os_atomic_inc_long(&ss->ref);
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}
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static inline void samplerstate_release(gs_samplerstate_t *ss)
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{
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if (os_atomic_dec_long(&ss->ref) == 0)
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bfree(ss);
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}
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struct gs_timer {
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GLuint queries[2];
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};
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struct gs_shader_param {
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enum gs_shader_param_type type;
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char *name;
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gs_shader_t *shader;
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gs_samplerstate_t *next_sampler;
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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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bool srgb;
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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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enum attrib_type {
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ATTRIB_POSITION,
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ATTRIB_NORMAL,
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ATTRIB_TANGENT,
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ATTRIB_COLOR,
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ATTRIB_TEXCOORD,
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ATTRIB_TARGET
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};
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struct shader_attrib {
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char *name;
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size_t index;
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enum attrib_type type;
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};
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struct gs_shader {
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gs_device_t *device;
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enum gs_shader_type type;
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GLuint obj;
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struct gs_shader_param *viewproj;
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struct gs_shader_param *world;
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DARRAY(struct shader_attrib) attribs;
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DARRAY(struct gs_shader_param) params;
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DARRAY(gs_samplerstate_t *) samplers;
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};
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struct program_param {
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GLint obj;
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struct gs_shader_param *param;
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};
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struct gs_program {
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gs_device_t *device;
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GLuint obj;
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struct gs_shader *vertex_shader;
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struct gs_shader *pixel_shader;
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DARRAY(struct program_param) params;
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DARRAY(GLint) attribs;
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struct gs_program **prev_next;
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struct gs_program *next;
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};
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extern struct gs_program *gs_program_create(struct gs_device *device);
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extern void gs_program_destroy(struct gs_program *program);
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extern void program_update_params(struct gs_program *shader);
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struct gs_vertex_buffer {
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GLuint vao;
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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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DARRAY(size_t) uv_sizes;
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gs_device_t *device;
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size_t num;
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bool dynamic;
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struct gs_vb_data *data;
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};
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extern bool load_vb_buffers(struct gs_program *program,
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struct gs_vertex_buffer *vb,
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struct gs_index_buffer *ib);
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struct gs_index_buffer {
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GLuint buffer;
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enum gs_index_type type;
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GLuint gl_type;
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gs_device_t *device;
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void *data;
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size_t num;
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size_t width;
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size_t size;
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bool dynamic;
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};
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struct gs_texture {
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gs_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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GLenum gl_target;
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GLenum 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;
|
|
bool is_dummy;
|
|
bool gen_mipmaps;
|
|
|
|
gs_samplerstate_t *cur_sampler;
|
|
struct fbo_info *fbo;
|
|
};
|
|
|
|
struct gs_texture_2d {
|
|
struct gs_texture base;
|
|
|
|
uint32_t width;
|
|
uint32_t height;
|
|
bool gen_mipmaps;
|
|
GLuint unpack_buffer;
|
|
};
|
|
|
|
struct gs_texture_3d {
|
|
struct gs_texture base;
|
|
|
|
uint32_t width;
|
|
uint32_t height;
|
|
uint32_t depth;
|
|
bool gen_mipmaps;
|
|
GLuint unpack_buffer;
|
|
};
|
|
|
|
struct gs_texture_cube {
|
|
struct gs_texture base;
|
|
|
|
uint32_t size;
|
|
};
|
|
|
|
struct gs_stage_surface {
|
|
gs_device_t *device;
|
|
|
|
enum gs_color_format format;
|
|
uint32_t width;
|
|
uint32_t height;
|
|
|
|
uint32_t bytes_per_pixel;
|
|
GLenum gl_format;
|
|
GLint gl_internal_format;
|
|
GLenum gl_type;
|
|
GLuint pack_buffer;
|
|
};
|
|
|
|
struct gs_zstencil_buffer {
|
|
gs_device_t *device;
|
|
GLuint buffer;
|
|
GLuint attachment;
|
|
GLenum format;
|
|
};
|
|
|
|
struct gs_swap_chain {
|
|
gs_device_t *device;
|
|
struct gl_windowinfo *wi;
|
|
struct gs_init_data info;
|
|
};
|
|
|
|
struct fbo_info {
|
|
GLuint fbo;
|
|
uint32_t width;
|
|
uint32_t height;
|
|
enum gs_color_format format;
|
|
|
|
gs_texture_t *cur_render_target;
|
|
int cur_render_side;
|
|
gs_zstencil_t *cur_zstencil_buffer;
|
|
};
|
|
|
|
static inline void fbo_info_destroy(struct fbo_info *fbo)
|
|
{
|
|
if (fbo) {
|
|
glDeleteFramebuffers(1, &fbo->fbo);
|
|
gl_success("glDeleteFramebuffers");
|
|
|
|
bfree(fbo);
|
|
}
|
|
}
|
|
|
|
struct gs_device {
|
|
struct gl_platform *plat;
|
|
enum copy_type copy_type;
|
|
|
|
GLuint empty_vao;
|
|
gs_samplerstate_t *raw_load_sampler;
|
|
|
|
gs_texture_t *cur_render_target;
|
|
gs_zstencil_t *cur_zstencil_buffer;
|
|
int cur_render_side;
|
|
gs_texture_t *cur_textures[GS_MAX_TEXTURES];
|
|
gs_samplerstate_t *cur_samplers[GS_MAX_TEXTURES];
|
|
gs_vertbuffer_t *cur_vertex_buffer;
|
|
gs_indexbuffer_t *cur_index_buffer;
|
|
gs_shader_t *cur_vertex_shader;
|
|
gs_shader_t *cur_pixel_shader;
|
|
gs_swapchain_t *cur_swap;
|
|
struct gs_program *cur_program;
|
|
|
|
struct gs_program *first_program;
|
|
|
|
enum gs_cull_mode cur_cull_mode;
|
|
struct gs_rect cur_viewport;
|
|
|
|
struct matrix4 cur_proj;
|
|
struct matrix4 cur_view;
|
|
struct matrix4 cur_viewproj;
|
|
|
|
DARRAY(struct matrix4) proj_stack;
|
|
|
|
struct fbo_info *cur_fbo;
|
|
};
|
|
|
|
extern struct fbo_info *get_fbo(gs_texture_t *tex, uint32_t width,
|
|
uint32_t height);
|
|
|
|
extern void gl_update(gs_device_t *device);
|
|
extern void gl_clear_context(gs_device_t *device);
|
|
|
|
extern struct gl_platform *gl_platform_create(gs_device_t *device,
|
|
uint32_t adapter);
|
|
extern void gl_platform_destroy(struct gl_platform *platform);
|
|
|
|
extern bool gl_platform_init_swapchain(struct gs_swap_chain *swap);
|
|
extern void gl_platform_cleanup_swapchain(struct gs_swap_chain *swap);
|
|
|
|
extern struct gl_windowinfo *
|
|
gl_windowinfo_create(const struct gs_init_data *info);
|
|
extern void gl_windowinfo_destroy(struct gl_windowinfo *wi);
|
|
|
|
extern void gl_getclientsize(const struct gs_swap_chain *swap, uint32_t *width,
|
|
uint32_t *height);
|