mirror of
https://github.com/obsproject/obs-studio.git
synced 2024-09-20 13:08:50 +02:00
5780f3f177
Summary: - Prefix all graphics subsystem names with gs_ or GS_ - Unsquish funciton names (for example _setfloat to _set_float) - Changed create functions to be more consistent with the rest of the API elsewhere. For exmaple, instead of gs_create_texture/gs_texture_destroy, it's now gs_texture_create/gs_texture_destroy - Renamed gs_stencil_op enum to gs_stencil_op_type From: To: ----------------------------------------------------------- tvertarray gs_tvertarray vb_data gs_vb_data vbdata_create gs_vbdata_create vbdata_destroy gs_vbdata_destroy shader_param gs_shader_param gs_effect gs_effect effect_technique gs_effect_technique effect_pass gs_effect_pass effect_param gs_effect_param texture_t gs_texture_t stagesurf_t gs_stagesurf_t zstencil_t gs_zstencil_t vertbuffer_t gs_vertbuffer_t indexbuffer_t gs_indexbuffer_t samplerstate_t gs_samplerstate_t swapchain_t gs_swapchain_t texrender_t gs_texrender_t shader_t gs_shader_t sparam_t gs_sparam_t effect_t gs_effect_t technique_t gs_technique_t eparam_t gs_eparam_t device_t gs_device_t graphics_t graphics_t shader_param_type gs_shader_param_type SHADER_PARAM_UNKNOWN GS_SHADER_PARAM_UNKNOWN SHADER_PARAM_BOOL GS_SHADER_PARAM_BOOL SHADER_PARAM_FLOAT GS_SHADER_PARAM_FLOAT SHADER_PARAM_INT GS_SHADER_PARAM_INT SHADER_PARAM_STRING GS_SHADER_PARAM_STRING SHADER_PARAM_VEC2 GS_SHADER_PARAM_VEC2 SHADER_PARAM_VEC3 GS_SHADER_PARAM_VEC3 SHADER_PARAM_VEC4 GS_SHADER_PARAM_VEC4 SHADER_PARAM_MATRIX4X4 GS_SHADER_PARAM_MATRIX4X4 SHADER_PARAM_TEXTURE GS_SHADER_PARAM_TEXTURE shader_param_info gs_shader_param_info shader_type gs_shader_type SHADER_VERTEX GS_SHADER_VERTEX SHADER_PIXEL GS_SHADER_PIXEL shader_destroy gs_shader_destroy shader_numparams gs_shader_get_num_params shader_getparambyidx gs_shader_get_param_by_idx shader_getparambyname gs_shader_get_param_by_name shader_getviewprojmatrix gs_shader_get_viewproj_matrix shader_getworldmatrix gs_shader_get_world_matrix shader_getparaminfo gs_shader_get_param_info shader_setbool gs_shader_set_bool shader_setfloat gs_shader_set_float shader_setint gs_shader_set_int shader_setmatrix3 gs_shader_setmatrix3 shader_setmatrix4 gs_shader_set_matrix4 shader_setvec2 gs_shader_set_vec2 shader_setvec3 gs_shader_set_vec3 shader_setvec4 gs_shader_set_vec4 shader_settexture gs_shader_set_texture shader_setval gs_shader_set_val shader_setdefault gs_shader_set_default effect_property_type gs_effect_property_type EFFECT_NONE GS_EFFECT_NONE EFFECT_BOOL GS_EFFECT_BOOL EFFECT_FLOAT GS_EFFECT_FLOAT EFFECT_COLOR GS_EFFECT_COLOR EFFECT_TEXTURE GS_EFFECT_TEXTURE effect_param_info gs_effect_param_info effect_destroy gs_effect_destroy effect_gettechnique gs_effect_get_technique technique_begin gs_technique_begin technique_end gs_technique_end technique_beginpass gs_technique_begin_pass technique_beginpassbyname gs_technique_begin_pass_by_name technique_endpass gs_technique_end_pass effect_numparams gs_effect_get_num_params effect_getparambyidx gs_effect_get_param_by_idx effect_getparambyname gs_effect_get_param_by_name effect_updateparams gs_effect_update_params effect_getviewprojmatrix gs_effect_get_viewproj_matrix effect_getworldmatrix gs_effect_get_world_matrix effect_getparaminfo gs_effect_get_param_info effect_setbool gs_effect_set_bool effect_setfloat gs_effect_set_float effect_setint gs_effect_set_int effect_setmatrix4 gs_effect_set_matrix4 effect_setvec2 gs_effect_set_vec2 effect_setvec3 gs_effect_set_vec3 effect_setvec4 gs_effect_set_vec4 effect_settexture gs_effect_set_texture effect_setval gs_effect_set_val effect_setdefault gs_effect_set_default texrender_create gs_texrender_create texrender_destroy gs_texrender_destroy texrender_begin gs_texrender_begin texrender_end gs_texrender_end texrender_reset gs_texrender_reset texrender_gettexture gs_texrender_get_texture GS_BUILDMIPMAPS GS_BUILD_MIPMAPS GS_RENDERTARGET GS_RENDER_TARGET gs_device_name gs_get_device_name gs_device_type gs_get_device_type gs_entercontext gs_enter_context gs_leavecontext gs_leave_context gs_getcontext gs_get_context gs_renderstart gs_render_start gs_renderstop gs_render_stop gs_rendersave gs_render_save gs_getinput gs_get_input gs_geteffect gs_get_effect gs_create_effect_from_file gs_effect_create_from_file gs_create_effect gs_effect_create gs_create_vertexshader_from_file gs_vertexshader_create_from_file gs_create_pixelshader_from_file gs_pixelshader_create_from_file gs_create_texture_from_file gs_texture_create_from_file gs_resetviewport gs_reset_viewport gs_set2dmode gs_set_2d_mode gs_set3dmode gs_set_3d_mode gs_create_swapchain gs_swapchain_create gs_getsize gs_get_size gs_getwidth gs_get_width gs_getheight gs_get_height gs_create_texture gs_texture_create gs_create_cubetexture gs_cubetexture_create gs_create_volumetexture gs_voltexture_create gs_create_zstencil gs_zstencil_create gs_create_stagesurface gs_stagesurface_create gs_create_samplerstate gs_samplerstate_create gs_create_vertexshader gs_vertexshader_create gs_create_pixelshader gs_pixelshader_create gs_create_vertexbuffer gs_vertexbuffer_create gs_create_indexbuffer gs_indexbuffer_create gs_gettexturetype gs_get_texture_type gs_load_defaultsamplerstate gs_load_default_samplerstate gs_getvertexshader gs_get_vertex_shader gs_getpixelshader gs_get_pixel_shader gs_getrendertarget gs_get_render_target gs_getzstenciltarget gs_get_zstencil_target gs_setrendertarget gs_set_render_target gs_setcuberendertarget gs_set_cube_render_target gs_beginscene gs_begin_scene gs_draw gs_draw gs_endscene gs_end_scene gs_setcullmode gs_set_cull_mode gs_getcullmode gs_get_cull_mode gs_enable_depthtest gs_enable_depth_test gs_enable_stenciltest gs_enable_stencil_test gs_enable_stencilwrite gs_enable_stencil_write gs_blendfunction gs_blend_function gs_depthfunction gs_depth_function gs_stencilfunction gs_stencil_function gs_stencilop gs_stencil_op gs_setviewport gs_set_viewport gs_getviewport gs_get_viewport gs_setscissorrect gs_set_scissor_rect gs_create_texture_from_iosurface gs_texture_create_from_iosurface gs_create_gdi_texture gs_texture_create_gdi gs_is_compressed_format gs_is_compressed_format gs_num_total_levels gs_get_total_levels texture_setimage gs_texture_set_image cubetexture_setimage gs_cubetexture_set_image swapchain_destroy gs_swapchain_destroy texture_destroy gs_texture_destroy texture_getwidth gs_texture_get_width texture_getheight gs_texture_get_height texture_getcolorformat gs_texture_get_color_format texture_map gs_texture_map texture_unmap gs_texture_unmap texture_isrect gs_texture_is_rect texture_getobj gs_texture_get_obj cubetexture_destroy gs_cubetexture_destroy cubetexture_getsize gs_cubetexture_get_size cubetexture_getcolorformat gs_cubetexture_get_color_format volumetexture_destroy gs_voltexture_destroy volumetexture_getwidth gs_voltexture_get_width volumetexture_getheight gs_voltexture_get_height volumetexture_getdepth gs_voltexture_getdepth volumetexture_getcolorformat gs_voltexture_get_color_format stagesurface_destroy gs_stagesurface_destroy stagesurface_getwidth gs_stagesurface_get_width stagesurface_getheight gs_stagesurface_get_height stagesurface_getcolorformat gs_stagesurface_get_color_format stagesurface_map gs_stagesurface_map stagesurface_unmap gs_stagesurface_unmap zstencil_destroy gs_zstencil_destroy samplerstate_destroy gs_samplerstate_destroy vertexbuffer_destroy gs_vertexbuffer_destroy vertexbuffer_flush gs_vertexbuffer_flush vertexbuffer_getdata gs_vertexbuffer_get_data indexbuffer_destroy gs_indexbuffer_destroy indexbuffer_flush gs_indexbuffer_flush indexbuffer_getdata gs_indexbuffer_get_data indexbuffer_numindices gs_indexbuffer_get_num_indices indexbuffer_gettype gs_indexbuffer_get_type texture_rebind_iosurface gs_texture_rebind_iosurface texture_get_dc gs_texture_get_dc texture_release_dc gs_texture_release_dc
665 lines
18 KiB
C
665 lines
18 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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#include "gl-subsystem.h"
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#include "gl-shaderparser.h"
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static void gl_write_function_contents(struct gl_shader_parser *glsp,
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struct cf_token **p_token, const char *end);
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static inline struct shader_var *sp_getparam(struct gl_shader_parser *glsp,
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struct cf_token *token)
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{
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size_t i;
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for (i = 0; i < glsp->parser.params.num; i++) {
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struct shader_var *param = glsp->parser.params.array+i;
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if (strref_cmp(&token->str, param->name) == 0)
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return param;
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}
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return NULL;
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}
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static inline size_t sp_getsampler(struct gl_shader_parser *glsp,
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struct cf_token *token)
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{
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size_t i;
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for (i = 0; i < glsp->parser.samplers.num; i++) {
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struct shader_sampler *sampler = glsp->parser.samplers.array+i;
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if (strref_cmp(&token->str, sampler->name) == 0)
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return i;
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}
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return -1;
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}
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static inline int cmp_type(const char *name, const size_t name_len,
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const char *type, const size_t type_len)
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{
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size_t min_len = (name_len < type_len) ? type_len : name_len;
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return astrcmp_n(name, type, min_len);
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}
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static bool gl_write_type_n(struct gl_shader_parser *glsp,
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const char *type, size_t len)
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{
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if (cmp_type(type, len, "float2", 6) == 0)
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dstr_cat(&glsp->gl_string, "vec2");
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else if (cmp_type(type, len, "float3", 6) == 0)
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dstr_cat(&glsp->gl_string, "vec3");
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else if (cmp_type(type, len, "float4", 6) == 0)
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dstr_cat(&glsp->gl_string, "vec4");
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else if (cmp_type(type, len, "float3x3", 8) == 0)
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dstr_cat(&glsp->gl_string, "mat3x3");
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else if (cmp_type(type, len, "float3x4", 8) == 0)
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dstr_cat(&glsp->gl_string, "mat3x4");
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else if (cmp_type(type, len, "float4x4", 8) == 0)
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dstr_cat(&glsp->gl_string, "mat4x4");
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else if (cmp_type(type, len, "texture2d", 9) == 0)
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dstr_cat(&glsp->gl_string, "sampler2D");
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else if (cmp_type(type, len, "texture3d", 9) == 0)
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dstr_cat(&glsp->gl_string, "sampler3D");
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else if (cmp_type(type, len, "texture_cube", 12) == 0)
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dstr_cat(&glsp->gl_string, "samplerCube");
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else if (cmp_type(type, len, "texture_rect", 12) == 0)
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dstr_cat(&glsp->gl_string, "sampler2DRect");
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else
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return false;
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return true;
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}
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static inline void gl_write_type(struct gl_shader_parser *glsp,
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const char *type)
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{
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if (!gl_write_type_n(glsp, type, strlen(type)))
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dstr_cat(&glsp->gl_string, type);
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}
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static inline bool gl_write_type_token(struct gl_shader_parser *glsp,
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struct cf_token *token)
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{
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return gl_write_type_n(glsp, token->str.array, token->str.len);
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}
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static void gl_write_var(struct gl_shader_parser *glsp, struct shader_var *var)
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{
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if (var->var_type == SHADER_VAR_UNIFORM)
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dstr_cat(&glsp->gl_string, "uniform ");
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else if (var->var_type == SHADER_VAR_CONST)
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dstr_cat(&glsp->gl_string, "const ");
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gl_write_type(glsp, var->type);
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dstr_cat(&glsp->gl_string, " ");
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dstr_cat(&glsp->gl_string, var->name);
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}
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static inline void gl_write_params(struct gl_shader_parser *glsp)
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{
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size_t i;
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for (i = 0; i < glsp->parser.params.num; i++) {
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struct shader_var *var = glsp->parser.params.array+i;
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gl_write_var(glsp, var);
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dstr_cat(&glsp->gl_string, ";\n");
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}
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dstr_cat(&glsp->gl_string, "\n");
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}
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static void gl_write_storage_var(struct gl_shader_parser *glsp,
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struct shader_var *var, bool input, const char *prefix);
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/* unwraps a structure that's used for input/output */
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static void gl_unwrap_storage_struct(struct gl_shader_parser *glsp,
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struct shader_struct *st, const char *name, bool input,
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const char *prefix)
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{
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struct dstr prefix_str;
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size_t i;
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dstr_init(&prefix_str);
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if (prefix)
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dstr_copy(&prefix_str, prefix);
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dstr_cat(&prefix_str, name);
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dstr_cat(&prefix_str, "_");
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for (i = 0; i < st->vars.num; i++) {
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struct shader_var *st_var = st->vars.array+i;
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gl_write_storage_var(glsp, st_var, input, prefix_str.array);
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}
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dstr_free(&prefix_str);
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}
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static void gl_write_storage_var(struct gl_shader_parser *glsp,
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struct shader_var *var, bool input, const char *prefix)
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{
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struct shader_struct *st = shader_parser_getstruct(&glsp->parser,
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var->type);
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if (st) {
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gl_unwrap_storage_struct(glsp, st, var->name, input, prefix);
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} else {
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struct gl_parser_attrib attrib;
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gl_parser_attrib_init(&attrib);
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dstr_cat(&glsp->gl_string, input ? "in " : "out ");
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if (prefix)
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dstr_cat(&attrib.name, prefix);
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dstr_cat(&attrib.name, var->name);
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gl_write_type(glsp, var->type);
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dstr_cat(&glsp->gl_string, " ");
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dstr_cat_dstr(&glsp->gl_string, &attrib.name);
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dstr_cat(&glsp->gl_string, ";\n");
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attrib.input = input;
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attrib.mapping = var->mapping;
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da_push_back(glsp->attribs, &attrib);
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}
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}
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static inline void gl_write_inputs(struct gl_shader_parser *glsp,
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struct shader_func *main)
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{
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size_t i;
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for (i = 0; i < main->params.num; i++)
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gl_write_storage_var(glsp, main->params.array+i, true,
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"inputval_");
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dstr_cat(&glsp->gl_string, "\n");
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}
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static void gl_write_outputs(struct gl_shader_parser *glsp,
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struct shader_func *main)
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{
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struct shader_var var = {0};
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var.type = main->return_type;
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var.name = "outputval";
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if (main->mapping)
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var.mapping = main->mapping;
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gl_write_storage_var(glsp, &var, false, NULL);
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dstr_cat(&glsp->gl_string, "\n");
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}
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static void gl_write_struct(struct gl_shader_parser *glsp,
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struct shader_struct *st)
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{
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size_t i;
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dstr_cat(&glsp->gl_string, "struct ");
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dstr_cat(&glsp->gl_string, st->name);
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dstr_cat(&glsp->gl_string, " {\n");
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for (i = 0; i < st->vars.num; i++) {
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struct shader_var *var = st->vars.array+i;
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dstr_cat(&glsp->gl_string, "\t");
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gl_write_var(glsp, var);
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dstr_cat(&glsp->gl_string, ";\n");
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}
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dstr_cat(&glsp->gl_string, "};\n\n");
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}
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static void gl_write_interface_block(struct gl_shader_parser *glsp)
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{
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if (glsp->type == GS_SHADER_VERTEX) {
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dstr_cat(&glsp->gl_string, "out gl_PerVertex {\n"
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"\tvec4 gl_Position;\n};\n\n");
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}
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}
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static inline void gl_write_structs(struct gl_shader_parser *glsp)
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{
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size_t i;
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for (i = 0; i < glsp->parser.structs.num; i++) {
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struct shader_struct *st = glsp->parser.structs.array+i;
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gl_write_struct(glsp, st);
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}
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}
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/*
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* NOTE: HLSL-> GLSL intrinsic conversions
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* atan2 -> atan
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* clip -> (unsupported)
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* ddx -> dFdx
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* ddy -> dFdy
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* fmod -> mod (XXX: these are different if sign is negative)
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* frac -> fract
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* lerp -> mix
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* lit -> (unsupported)
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* log10 -> (unsupported)
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* mul -> (change to operator)
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* rsqrt -> inversesqrt
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* saturate -> (use clamp)
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* tex* -> texture
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* tex*grad -> textureGrad
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* tex*lod -> textureLod
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* tex*bias -> (use optional 'bias' value)
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* tex*proj -> textureProj
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*
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* All else can be left as-is
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*/
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static bool gl_write_mul(struct gl_shader_parser *glsp,
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struct cf_token **p_token)
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{
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struct cf_parser *cfp = &glsp->parser.cfp;
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cfp->cur_token = *p_token;
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if (!cf_next_token(cfp)) return false;
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if (!cf_token_is(cfp, "(")) return false;
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dstr_cat(&glsp->gl_string, "(");
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gl_write_function_contents(glsp, &cfp->cur_token, ",");
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dstr_cat(&glsp->gl_string, ") * (");
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cf_next_token(cfp);
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gl_write_function_contents(glsp, &cfp->cur_token, ")");
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dstr_cat(&glsp->gl_string, "))");
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*p_token = cfp->cur_token;
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return true;
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}
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static bool gl_write_saturate(struct gl_shader_parser *glsp,
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struct cf_token **p_token)
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{
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struct cf_parser *cfp = &glsp->parser.cfp;
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cfp->cur_token = *p_token;
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if (!cf_next_token(cfp)) return false;
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if (!cf_token_is(cfp, "(")) return false;
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dstr_cat(&glsp->gl_string, "clamp");
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gl_write_function_contents(glsp, &cfp->cur_token, ")");
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dstr_cat(&glsp->gl_string, ", 0.0, 1.0)");
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*p_token = cfp->cur_token;
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return true;
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}
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static inline bool gl_write_texture_call(struct gl_shader_parser *glsp,
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struct shader_var *var, const char *call)
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{
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struct cf_parser *cfp = &glsp->parser.cfp;
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size_t sampler_id = (size_t)-1;
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if (!cf_next_token(cfp)) return false;
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if (!cf_token_is(cfp, "(")) return false;
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if (!cf_next_token(cfp)) return false;
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sampler_id = sp_getsampler(glsp, cfp->cur_token);
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if (sampler_id == (size_t)-1) return false;
|
|
|
|
if (!cf_next_token(cfp)) return false;
|
|
if (!cf_token_is(cfp, ",")) return false;
|
|
|
|
var->gl_sampler_id = sampler_id;
|
|
|
|
dstr_cat(&glsp->gl_string, call);
|
|
dstr_cat(&glsp->gl_string, "(");
|
|
dstr_cat(&glsp->gl_string, var->name);
|
|
dstr_cat(&glsp->gl_string, ", ");
|
|
return true;
|
|
}
|
|
|
|
/* processes texture.Sample(sampler, texcoord) */
|
|
static bool gl_write_texture_code(struct gl_shader_parser *glsp,
|
|
struct cf_token **p_token, struct shader_var *var)
|
|
{
|
|
struct cf_parser *cfp = &glsp->parser.cfp;
|
|
bool written = false;
|
|
cfp->cur_token = *p_token;
|
|
|
|
if (!cf_next_token(cfp)) return false;
|
|
if (!cf_token_is(cfp, ".")) return false;
|
|
if (!cf_next_token(cfp)) return false;
|
|
|
|
if (cf_token_is(cfp, "Sample"))
|
|
written = gl_write_texture_call(glsp, var, "texture");
|
|
else if (cf_token_is(cfp, "SampleBias"))
|
|
written = gl_write_texture_call(glsp, var, "texture");
|
|
else if (cf_token_is(cfp, "SampleGrad"))
|
|
written = gl_write_texture_call(glsp, var, "textureGrad");
|
|
else if (cf_token_is(cfp, "SampleLevel"))
|
|
written = gl_write_texture_call(glsp, var, "textureLod");
|
|
|
|
if (!written)
|
|
return false;
|
|
|
|
if (!cf_next_token(cfp)) return false;
|
|
|
|
gl_write_function_contents(glsp, &cfp->cur_token, ")");
|
|
dstr_cat(&glsp->gl_string, ")");
|
|
|
|
*p_token = cfp->cur_token;
|
|
return true;
|
|
}
|
|
|
|
static bool gl_write_intrinsic(struct gl_shader_parser *glsp,
|
|
struct cf_token **p_token)
|
|
{
|
|
struct cf_token *token = *p_token;
|
|
bool written = true;
|
|
|
|
if (strref_cmp(&token->str, "atan2") == 0) {
|
|
dstr_cat(&glsp->gl_string, "atan2");
|
|
} else if (strref_cmp(&token->str, "ddx") == 0) {
|
|
dstr_cat(&glsp->gl_string, "dFdx");
|
|
} else if (strref_cmp(&token->str, "ddy") == 0) {
|
|
dstr_cat(&glsp->gl_string, "dFdy");
|
|
} else if (strref_cmp(&token->str, "frac") == 0) {
|
|
dstr_cat(&glsp->gl_string, "fract");
|
|
} else if (strref_cmp(&token->str, "lerp") == 0) {
|
|
dstr_cat(&glsp->gl_string, "mix");
|
|
} else if (strref_cmp(&token->str, "fmod") == 0) {
|
|
dstr_cat(&glsp->gl_string, "mod");
|
|
} else if (strref_cmp(&token->str, "rsqrt") == 0) {
|
|
dstr_cat(&glsp->gl_string, "inversesqrt");
|
|
} else if (strref_cmp(&token->str, "saturate") == 0) {
|
|
written = gl_write_saturate(glsp, &token);
|
|
} else if (strref_cmp(&token->str, "mul") == 0) {
|
|
written = gl_write_mul(glsp, &token);
|
|
} else {
|
|
struct shader_var *var = sp_getparam(glsp, token);
|
|
if (var && astrcmp_n(var->type, "texture", 7) == 0)
|
|
written = gl_write_texture_code(glsp, &token, var);
|
|
else
|
|
written = false;
|
|
}
|
|
|
|
if (written)
|
|
*p_token = token;
|
|
return written;
|
|
}
|
|
|
|
static void gl_write_function_contents(struct gl_shader_parser *glsp,
|
|
struct cf_token **p_token, const char *end)
|
|
{
|
|
struct cf_token *token = *p_token;
|
|
|
|
if (token->type != CFTOKEN_NAME
|
|
|| ( !gl_write_type_token(glsp, token)
|
|
&& !gl_write_intrinsic(glsp, &token)))
|
|
dstr_cat_strref(&glsp->gl_string, &token->str);
|
|
|
|
while (token->type != CFTOKEN_NONE) {
|
|
token++;
|
|
|
|
if (end && strref_cmp(&token->str, end) == 0)
|
|
break;
|
|
|
|
if (token->type == CFTOKEN_NAME) {
|
|
if (!gl_write_type_token(glsp, token) &&
|
|
!gl_write_intrinsic(glsp, &token))
|
|
dstr_cat_strref(&glsp->gl_string, &token->str);
|
|
|
|
} else if (token->type == CFTOKEN_OTHER) {
|
|
if (*token->str.array == '{')
|
|
gl_write_function_contents(glsp, &token, "}");
|
|
else if (*token->str.array == '(')
|
|
gl_write_function_contents(glsp, &token, ")");
|
|
|
|
dstr_cat_strref(&glsp->gl_string, &token->str);
|
|
|
|
} else {
|
|
dstr_cat_strref(&glsp->gl_string, &token->str);
|
|
}
|
|
}
|
|
|
|
*p_token = token;
|
|
}
|
|
|
|
static void gl_write_function(struct gl_shader_parser *glsp,
|
|
struct shader_func *func)
|
|
{
|
|
size_t i;
|
|
struct cf_token *token;
|
|
|
|
gl_write_type(glsp, func->return_type);
|
|
dstr_cat(&glsp->gl_string, " ");
|
|
|
|
if (strcmp(func->name, "main") == 0)
|
|
dstr_cat(&glsp->gl_string, "_main_wrap");
|
|
else
|
|
dstr_cat(&glsp->gl_string, func->name);
|
|
|
|
dstr_cat(&glsp->gl_string, "(");
|
|
|
|
for (i = 0; i < func->params.num; i++) {
|
|
struct shader_var *param = func->params.array+i;
|
|
|
|
if (i > 0)
|
|
dstr_cat(&glsp->gl_string, ", ");
|
|
gl_write_var(glsp, param);
|
|
}
|
|
|
|
dstr_cat(&glsp->gl_string, ")\n");
|
|
|
|
token = func->start;
|
|
gl_write_function_contents(glsp, &token, "}");
|
|
dstr_cat(&glsp->gl_string, "}\n\n");
|
|
}
|
|
|
|
static inline void gl_write_functions(struct gl_shader_parser *glsp)
|
|
{
|
|
size_t i;
|
|
for (i = 0; i < glsp->parser.funcs.num; i++) {
|
|
struct shader_func *func = glsp->parser.funcs.array+i;
|
|
gl_write_function(glsp, func);
|
|
}
|
|
}
|
|
|
|
static inline void gl_write_main_interface_assign(
|
|
struct gl_shader_parser *glsp, struct shader_var *var,
|
|
const char *src)
|
|
{
|
|
/* vertex shaders: write gl_Position */
|
|
if (glsp->type == GS_SHADER_VERTEX &&
|
|
strcmp(var->mapping, "POSITION") == 0) {
|
|
dstr_cat(&glsp->gl_string, "\tgl_Position = ");
|
|
dstr_cat(&glsp->gl_string, src);
|
|
dstr_cat(&glsp->gl_string, var->name);
|
|
dstr_cat(&glsp->gl_string, ";\n");
|
|
}
|
|
}
|
|
|
|
static void gl_write_main_storage_assign(struct gl_shader_parser *glsp,
|
|
struct shader_var *var, const char *dst, const char *src,
|
|
bool input)
|
|
{
|
|
struct shader_struct *st;
|
|
struct dstr dst_copy = {0};
|
|
char ch_left = input ? '.' : '_';
|
|
char ch_right = input ? '_' : '.';
|
|
|
|
if (dst) {
|
|
dstr_copy(&dst_copy, dst);
|
|
dstr_cat_ch(&dst_copy, ch_left);
|
|
} else {
|
|
dstr_copy(&dst_copy, "\t");
|
|
}
|
|
|
|
dstr_cat(&dst_copy, var->name);
|
|
|
|
st = shader_parser_getstruct(&glsp->parser, var->type);
|
|
if (st) {
|
|
struct dstr src_copy = {0};
|
|
size_t i;
|
|
|
|
if (src)
|
|
dstr_copy(&src_copy, src);
|
|
dstr_cat(&src_copy, var->name);
|
|
dstr_cat_ch(&src_copy, ch_right);
|
|
|
|
for (i = 0; i < st->vars.num; i++) {
|
|
struct shader_var *st_var = st->vars.array+i;
|
|
gl_write_main_storage_assign(glsp, st_var,
|
|
dst_copy.array, src_copy.array, input);
|
|
}
|
|
|
|
dstr_free(&src_copy);
|
|
} else {
|
|
if (!dstr_is_empty(&dst_copy))
|
|
dstr_cat_dstr(&glsp->gl_string, &dst_copy);
|
|
dstr_cat(&glsp->gl_string, " = ");
|
|
if (src)
|
|
dstr_cat(&glsp->gl_string, src);
|
|
dstr_cat(&glsp->gl_string, var->name);
|
|
dstr_cat(&glsp->gl_string, ";\n");
|
|
|
|
if (!input)
|
|
gl_write_main_interface_assign(glsp, var, src);
|
|
}
|
|
|
|
dstr_free(&dst_copy);
|
|
}
|
|
|
|
static inline void gl_write_main_storage_inputs(struct gl_shader_parser *glsp,
|
|
struct shader_func *main)
|
|
{
|
|
gl_write_main_storage_assign(glsp, main->params.array, NULL,
|
|
"inputval_", true);
|
|
}
|
|
|
|
static inline void gl_write_main_storage_outputs(struct gl_shader_parser *glsp,
|
|
struct shader_func *main)
|
|
{
|
|
/* we only do this *if* we're writing a struct, because otherwise
|
|
* the call to 'main' already does the assignment for us */
|
|
if (!main->mapping) {
|
|
struct shader_var var = {0};
|
|
var.name = "outputval";
|
|
var.type = (char*)main->return_type;
|
|
dstr_cat(&glsp->gl_string, "\n");
|
|
gl_write_main_storage_assign(glsp, &var, NULL, NULL, false);
|
|
}
|
|
}
|
|
|
|
static inline void gl_write_main_vars(struct gl_shader_parser *glsp,
|
|
struct shader_func *main_func)
|
|
{
|
|
size_t i;
|
|
for (i = 0; i < main_func->params.num; i++) {
|
|
dstr_cat(&glsp->gl_string, "\t");
|
|
dstr_cat(&glsp->gl_string, main_func->params.array[i].type);
|
|
dstr_cat(&glsp->gl_string, " ");
|
|
dstr_cat(&glsp->gl_string, main_func->params.array[i].name);
|
|
dstr_cat(&glsp->gl_string, ";\n");
|
|
}
|
|
|
|
if (!main_func->mapping) {
|
|
dstr_cat(&glsp->gl_string, "\t");
|
|
dstr_cat(&glsp->gl_string, main_func->return_type);
|
|
dstr_cat(&glsp->gl_string, " outputval;\n\n");
|
|
}
|
|
}
|
|
|
|
static inline void gl_write_main_func_call(struct gl_shader_parser *glsp,
|
|
struct shader_func *main_func)
|
|
{
|
|
size_t i;
|
|
dstr_cat(&glsp->gl_string, "\n\toutputval = _main_wrap(");
|
|
|
|
for (i = 0; i < main_func->params.num; i++) {
|
|
if (i)
|
|
dstr_cat(&glsp->gl_string, ", ");
|
|
dstr_cat(&glsp->gl_string, main_func->params.array[i].name);
|
|
}
|
|
|
|
dstr_cat(&glsp->gl_string, ");\n");
|
|
}
|
|
|
|
static void gl_write_main(struct gl_shader_parser *glsp,
|
|
struct shader_func *main)
|
|
{
|
|
dstr_cat(&glsp->gl_string, "void main(void)\n{\n");
|
|
|
|
gl_write_main_vars(glsp, main);
|
|
gl_write_main_storage_inputs(glsp, main);
|
|
gl_write_main_func_call(glsp, main);
|
|
gl_write_main_storage_outputs(glsp, main);
|
|
|
|
dstr_cat(&glsp->gl_string, "}\n");
|
|
}
|
|
|
|
/* ugh, don't ask. I'll probably get rid of the need for this function later */
|
|
static void gl_rename_attributes(struct gl_shader_parser *glsp)
|
|
{
|
|
size_t i = 0, input_idx = 0, output_idx = 0;
|
|
|
|
for (i = 0; i < glsp->attribs.num; i++) {
|
|
struct gl_parser_attrib *attrib = glsp->attribs.array+i;
|
|
struct dstr new_name = {0};
|
|
const char *prefix;
|
|
size_t val;
|
|
|
|
if (attrib->input) {
|
|
prefix = glsp->input_prefix;
|
|
val = input_idx++;
|
|
} else {
|
|
prefix = glsp->output_prefix;
|
|
val = output_idx++;
|
|
}
|
|
|
|
dstr_printf(&new_name, "%s%u", prefix, val);
|
|
dstr_replace(&glsp->gl_string, attrib->name.array,
|
|
new_name.array);
|
|
dstr_move(&attrib->name, &new_name);
|
|
}
|
|
}
|
|
|
|
static bool gl_shader_buildstring(struct gl_shader_parser *glsp)
|
|
{
|
|
struct shader_func *main_func;
|
|
|
|
main_func = shader_parser_getfunc(&glsp->parser, "main");
|
|
if (!main_func) {
|
|
blog(LOG_ERROR, "function 'main' not found");
|
|
return false;
|
|
}
|
|
|
|
dstr_copy(&glsp->gl_string, "#version 150\n\n");
|
|
gl_write_params(glsp);
|
|
gl_write_inputs(glsp, main_func);
|
|
gl_write_outputs(glsp, main_func);
|
|
gl_write_interface_block(glsp);
|
|
gl_write_structs(glsp);
|
|
gl_write_functions(glsp);
|
|
gl_write_main(glsp, main_func);
|
|
gl_rename_attributes(glsp);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool gl_shader_parse(struct gl_shader_parser *glsp,
|
|
const char *shader_str, const char *file)
|
|
{
|
|
bool success = shader_parse(&glsp->parser, shader_str, file);
|
|
char *str = shader_parser_geterrors(&glsp->parser);
|
|
if (str) {
|
|
blog(LOG_WARNING, "Shader parser errors/warnings:\n%s\n", str);
|
|
bfree(str);
|
|
}
|
|
|
|
if (success)
|
|
success = gl_shader_buildstring(glsp);
|
|
|
|
return success;
|
|
}
|