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- /******************************************************************************
- Copyright (C) 2013 by Hugh Bailey <[email protected]>
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
- #pragma once
- #include "util/darray.h"
- #include "graphics/graphics.h"
- #include "graphics/matrix4.h"
- #include "glew/include/GL/glew.h"
- #include "gl-helpers.h"
- #include "gl-exports.h"
- struct gl_platform;
- struct gl_windowinfo;
- enum copy_type {
- COPY_TYPE_ARB,
- COPY_TYPE_NV,
- COPY_TYPE_FBO_BLIT
- };
- static inline GLint convert_gs_format(enum gs_color_format format)
- {
- switch (format) {
- case GS_A8: return GL_RGBA;
- case GS_R8: return GL_RED;
- case GS_RGBA: return GL_RGBA;
- case GS_BGRX: return GL_BGR;
- case GS_BGRA: return GL_BGRA;
- case GS_R10G10B10A2: return GL_RGBA;
- case GS_RGBA16: return GL_RGBA;
- case GS_R16: return GL_RED;
- case GS_RGBA16F: return GL_RGBA;
- case GS_RGBA32F: return GL_RGBA;
- case GS_RG16F: return GL_RG;
- case GS_RG32F: return GL_RG;
- case GS_R16F: return GL_RED;
- case GS_R32F: return GL_RED;
- case GS_DXT1: return GL_RGB;
- case GS_DXT3: return GL_RGBA;
- case GS_DXT5: return GL_RGBA;
- case GS_UNKNOWN: return 0;
- }
- return 0;
- }
- static inline GLint convert_gs_internal_format(enum gs_color_format format)
- {
- switch (format) {
- case GS_A8: return GL_R8; /* NOTE: use GL_TEXTURE_SWIZZLE_x */
- case GS_R8: return GL_R8;
- case GS_RGBA: return GL_RGBA;
- case GS_BGRX: return GL_RGBA;
- case GS_BGRA: return GL_RGBA;
- case GS_R10G10B10A2: return GL_RGB10_A2;
- case GS_RGBA16: return GL_RGBA16;
- case GS_R16: return GL_R16;
- case GS_RGBA16F: return GL_RGBA16F;
- case GS_RGBA32F: return GL_RGBA32F;
- case GS_RG16F: return GL_RG16F;
- case GS_RG32F: return GL_RG32F;
- case GS_R16F: return GL_R16F;
- case GS_R32F: return GL_R32F;
- case GS_DXT1: return GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
- case GS_DXT3: return GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
- case GS_DXT5: return GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
- case GS_UNKNOWN: return 0;
- }
- return 0;
- }
- static inline GLenum get_gl_format_type(enum gs_color_format format)
- {
- switch (format) {
- case GS_A8: return GL_UNSIGNED_BYTE;
- case GS_R8: return GL_UNSIGNED_BYTE;
- case GS_RGBA: return GL_UNSIGNED_BYTE;
- case GS_BGRX: return GL_UNSIGNED_BYTE;
- case GS_BGRA: return GL_UNSIGNED_BYTE;
- case GS_R10G10B10A2: return GL_UNSIGNED_INT_10_10_10_2;
- case GS_RGBA16: return GL_UNSIGNED_SHORT;
- case GS_R16: return GL_UNSIGNED_SHORT;
- case GS_RGBA16F: return GL_UNSIGNED_SHORT;
- case GS_RGBA32F: return GL_FLOAT;
- case GS_RG16F: return GL_UNSIGNED_SHORT;
- case GS_RG32F: return GL_FLOAT;
- case GS_R16F: return GL_UNSIGNED_SHORT;
- case GS_R32F: return GL_FLOAT;
- case GS_DXT1: return GL_UNSIGNED_BYTE;
- case GS_DXT3: return GL_UNSIGNED_BYTE;
- case GS_DXT5: return GL_UNSIGNED_BYTE;
- case GS_UNKNOWN: return 0;
- }
- return GL_UNSIGNED_BYTE;
- }
- static inline GLenum convert_zstencil_format(enum gs_zstencil_format format)
- {
- switch (format) {
- case GS_Z16: return GL_DEPTH_COMPONENT16;
- case GS_Z24_S8: return GL_DEPTH24_STENCIL8;
- case GS_Z32F: return GL_DEPTH_COMPONENT32F;
- case GS_Z32F_S8X24: return GL_DEPTH32F_STENCIL8;
- case GS_ZS_NONE: return 0;
- }
- return 0;
- }
- static inline GLenum convert_gs_depth_test(enum gs_depth_test test)
- {
- switch (test) {
- case GS_NEVER: return GL_NEVER;
- case GS_LESS: return GL_LESS;
- case GS_LEQUAL: return GL_LEQUAL;
- case GS_EQUAL: return GL_EQUAL;
- case GS_GEQUAL: return GL_GEQUAL;
- case GS_GREATER: return GL_GREATER;
- case GS_NOTEQUAL: return GL_NOTEQUAL;
- case GS_ALWAYS: return GL_ALWAYS;
- }
- return GL_NEVER;
- }
- static inline GLenum convert_gs_stencil_op(enum gs_stencil_op op)
- {
- switch (op) {
- case GS_KEEP: return GL_KEEP;
- case GS_ZERO: return GL_ZERO;
- case GS_REPLACE: return GL_REPLACE;
- case GS_INCR: return GL_INCR;
- case GS_DECR: return GL_DECR;
- case GS_INVERT: return GL_INVERT;
- }
- return GL_KEEP;
- }
- static inline GLenum convert_gs_stencil_side(enum gs_stencil_side side)
- {
- switch (side) {
- case GS_STENCIL_FRONT: return GL_FRONT;
- case GS_STENCIL_BACK: return GL_BACK;
- case GS_STENCIL_BOTH: return GL_FRONT_AND_BACK;
- }
- return GL_FRONT;
- }
- static inline GLenum convert_gs_blend_type(enum gs_blend_type type)
- {
- switch (type) {
- case GS_BLEND_ZERO: return GL_ZERO;
- case GS_BLEND_ONE: return GL_ONE;
- case GS_BLEND_SRCCOLOR: return GL_SRC_COLOR;
- case GS_BLEND_INVSRCCOLOR: return GL_ONE_MINUS_SRC_COLOR;
- case GS_BLEND_SRCALPHA: return GL_SRC_ALPHA;
- case GS_BLEND_INVSRCALPHA: return GL_ONE_MINUS_SRC_ALPHA;
- case GS_BLEND_DSTCOLOR: return GL_DST_COLOR;
- case GS_BLEND_INVDSTCOLOR: return GL_ONE_MINUS_DST_COLOR;
- case GS_BLEND_DSTALPHA: return GL_DST_ALPHA;
- case GS_BLEND_INVDSTALPHA: return GL_ONE_MINUS_DST_ALPHA;
- case GS_BLEND_SRCALPHASAT: return GL_SRC_ALPHA_SATURATE;
- }
- return GL_ONE;
- }
- static inline GLenum convert_shader_type(enum shader_type type)
- {
- switch (type) {
- case SHADER_VERTEX: return GL_VERTEX_SHADER;
- case SHADER_PIXEL: return GL_FRAGMENT_SHADER;
- }
- return GL_VERTEX_SHADER;
- }
- static inline void convert_filter(enum gs_sample_filter filter,
- GLint *min_filter, GLint *mag_filter)
- {
- switch (filter) {
- case GS_FILTER_POINT:
- *min_filter = GL_NEAREST_MIPMAP_NEAREST;
- *mag_filter = GL_NEAREST;
- return;
- case GS_FILTER_LINEAR:
- *min_filter = GL_LINEAR_MIPMAP_LINEAR;
- *mag_filter = GL_LINEAR;
- return;
- case GS_FILTER_MIN_MAG_POINT_MIP_LINEAR:
- *min_filter = GL_NEAREST_MIPMAP_LINEAR;
- *mag_filter = GL_NEAREST;
- return;
- case GS_FILTER_MIN_POINT_MAG_LINEAR_MIP_POINT:
- *min_filter = GL_NEAREST_MIPMAP_NEAREST;
- *mag_filter = GL_LINEAR;
- return;
- case GS_FILTER_MIN_POINT_MAG_MIP_LINEAR:
- *min_filter = GL_NEAREST_MIPMAP_LINEAR;
- *mag_filter = GL_LINEAR;
- return;
- case GS_FILTER_MIN_LINEAR_MAG_MIP_POINT:
- *min_filter = GL_LINEAR_MIPMAP_NEAREST;
- *mag_filter = GL_NEAREST;
- return;
- case GS_FILTER_MIN_LINEAR_MAG_POINT_MIP_LINEAR:
- *min_filter = GL_LINEAR_MIPMAP_LINEAR;
- *mag_filter = GL_NEAREST;
- return;
- case GS_FILTER_MIN_MAG_LINEAR_MIP_POINT:
- *min_filter = GL_LINEAR_MIPMAP_NEAREST;
- *mag_filter = GL_LINEAR;
- return;
- case GS_FILTER_ANISOTROPIC:
- *min_filter = GL_LINEAR_MIPMAP_LINEAR;
- *mag_filter = GL_LINEAR;
- return;
- }
- *min_filter = GL_NEAREST_MIPMAP_NEAREST;
- *mag_filter = GL_NEAREST;
- }
- static inline GLint convert_address_mode(enum gs_address_mode mode)
- {
- switch (mode) {
- case GS_ADDRESS_WRAP: return GL_REPEAT;
- case GS_ADDRESS_CLAMP: return GL_CLAMP_TO_EDGE;
- case GS_ADDRESS_MIRROR: return GL_MIRRORED_REPEAT;
- case GS_ADDRESS_BORDER: return GL_CLAMP_TO_BORDER;
- case GS_ADDRESS_MIRRORONCE: return GL_MIRROR_CLAMP_EXT;
- }
- return GL_REPEAT;
- }
- static inline GLenum convert_gs_topology(enum gs_draw_mode mode)
- {
- switch (mode) {
- case GS_POINTS: return GL_POINTS;
- case GS_LINES: return GL_LINES;
- case GS_LINESTRIP: return GL_LINE_STRIP;
- case GS_TRIS: return GL_TRIANGLES;
- case GS_TRISTRIP: return GL_TRIANGLE_STRIP;
- }
- return GL_POINTS;
- }
- extern void convert_sampler_info(struct gs_sampler_state *sampler,
- struct gs_sampler_info *info);
- struct gs_sampler_state {
- device_t device;
- volatile uint32_t ref;
- GLint min_filter;
- GLint mag_filter;
- GLint address_u;
- GLint address_v;
- GLint address_w;
- GLint max_anisotropy;
- };
- static inline void samplerstate_addref(samplerstate_t ss)
- {
- ss->ref++;
- }
- static inline void samplerstate_release(samplerstate_t ss)
- {
- if (--ss->ref == 0)
- bfree(ss);
- }
- struct shader_param {
- enum shader_param_type type;
- char *name;
- shader_t shader;
- GLint param;
- GLint texture_id;
- size_t sampler_id;
- int array_count;
- struct gs_texture *texture;
- DARRAY(uint8_t) cur_value;
- DARRAY(uint8_t) def_value;
- bool changed;
- };
- enum attrib_type {
- ATTRIB_POSITION,
- ATTRIB_NORMAL,
- ATTRIB_TANGENT,
- ATTRIB_COLOR,
- ATTRIB_TEXCOORD,
- ATTRIB_TARGET
- };
- struct shader_attrib {
- GLint attrib;
- size_t index;
- enum attrib_type type;
- };
- struct gs_shader {
- device_t device;
- enum shader_type type;
- GLuint program;
- struct shader_param *viewproj;
- struct shader_param *world;
- DARRAY(struct shader_attrib) attribs;
- DARRAY(struct shader_param) params;
- DARRAY(samplerstate_t) samplers;
- };
- extern void shader_update_textures(struct gs_shader *shader);
- struct gs_vertex_buffer {
- GLuint vertex_buffer;
- GLuint normal_buffer;
- GLuint tangent_buffer;
- GLuint color_buffer;
- DARRAY(GLuint) uv_buffers;
- DARRAY(size_t) uv_sizes;
- device_t device;
- size_t num;
- bool dynamic;
- struct vb_data *data;
- };
- extern bool vertexbuffer_load(device_t device, vertbuffer_t vb);
- struct gs_index_buffer {
- GLuint buffer;
- enum gs_index_type type;
- GLuint gl_type;
- device_t device;
- void *data;
- size_t num;
- size_t width;
- size_t size;
- bool dynamic;
- };
- struct gs_texture {
- device_t device;
- enum gs_texture_type type;
- enum gs_color_format format;
- GLenum gl_format;
- GLenum gl_target;
- GLint gl_internal_format;
- GLenum gl_type;
- GLuint texture;
- uint32_t levels;
- bool is_dynamic;
- bool is_render_target;
- bool gen_mipmaps;
- samplerstate_t cur_sampler;
- };
- struct gs_texture_2d {
- struct gs_texture base;
- uint32_t width;
- uint32_t height;
- bool gen_mipmaps;
- GLuint unpack_buffer;
- };
- struct gs_texture_cube {
- struct gs_texture base;
- uint32_t size;
- };
- struct gs_stage_surface {
- 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 texture;
- GLuint pack_buffer;
- };
- struct gs_zstencil_buffer {
- device_t device;
- GLuint buffer;
- GLuint attachment;
- GLenum format;
- };
- struct gs_swap_chain {
- 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;
- texture_t cur_render_target;
- int cur_render_side;
- 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;
- GLuint pipeline;
- enum copy_type copy_type;
- texture_t cur_render_target;
- zstencil_t cur_zstencil_buffer;
- int cur_render_side;
- texture_t cur_textures[GS_MAX_TEXTURES];
- samplerstate_t cur_samplers[GS_MAX_TEXTURES];
- vertbuffer_t cur_vertex_buffer;
- indexbuffer_t cur_index_buffer;
- shader_t cur_vertex_shader;
- shader_t cur_pixel_shader;
- swapchain_t cur_swap;
- 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;
- DARRAY(struct fbo_info*) fbos;
- struct fbo_info *cur_fbo;
- };
- extern struct gl_platform *gl_platform_create(device_t device,
- struct gs_init_data *info);
- extern struct gs_swap_chain *gl_platform_getswap(struct gl_platform *platform);
- extern void gl_platform_destroy(struct gl_platform *platform);
- extern struct gl_windowinfo *gl_windowinfo_create(struct gs_init_data *info);
- extern void gl_windowinfo_destroy(struct gl_windowinfo *wi);
- extern void gl_getclientsize(struct gs_swap_chain *swap,
- uint32_t *width,
- uint32_t *height);
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