420 lines
15 KiB
C++
420 lines
15 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2005 Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup gpu
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*/
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct GPUVertBuf;
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/** Opaque type hiding #blender::gpu::Shader */
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typedef struct GPUShader GPUShader;
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typedef enum eGPUShaderTFBType {
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GPU_SHADER_TFB_NONE = 0, /* Transform feedback unsupported. */
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GPU_SHADER_TFB_POINTS = 1,
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GPU_SHADER_TFB_LINES = 2,
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GPU_SHADER_TFB_TRIANGLES = 3,
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} eGPUShaderTFBType;
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GPUShader *GPU_shader_create(const char *vertcode,
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const char *fragcode,
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const char *geomcode,
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const char *libcode,
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const char *defines,
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const char *shname);
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GPUShader *GPU_shader_create_from_python(const char *vertcode,
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const char *fragcode,
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const char *geomcode,
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const char *libcode,
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const char *defines);
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GPUShader *GPU_shader_create_ex(const char *vertcode,
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const char *fragcode,
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const char *geomcode,
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const char *libcode,
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const char *defines,
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const eGPUShaderTFBType tf_type,
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const char **tf_names,
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const int tf_count,
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const char *shname);
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struct GPU_ShaderCreateFromArray_Params {
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const char **vert, **geom, **frag, **defs;
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};
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struct GPUShader *GPU_shader_create_from_arrays_impl(
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const struct GPU_ShaderCreateFromArray_Params *params, const char *func, int line);
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#define GPU_shader_create_from_arrays(...) \
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GPU_shader_create_from_arrays_impl( \
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&(const struct GPU_ShaderCreateFromArray_Params)__VA_ARGS__, __func__, __LINE__)
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#define GPU_shader_create_from_arrays_named(name, ...) \
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GPU_shader_create_from_arrays_impl( \
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&(const struct GPU_ShaderCreateFromArray_Params)__VA_ARGS__, name, 0)
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void GPU_shader_free(GPUShader *shader);
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void GPU_shader_bind(GPUShader *shader);
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void GPU_shader_unbind(void);
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/* Returns true if transform feedback was successfully enabled. */
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bool GPU_shader_transform_feedback_enable(GPUShader *shader, struct GPUVertBuf *vertbuf);
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void GPU_shader_transform_feedback_disable(GPUShader *shader);
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int GPU_shader_get_program(GPUShader *shader);
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typedef enum {
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GPU_UNIFORM_MODEL = 0, /* mat4 ModelMatrix */
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GPU_UNIFORM_VIEW, /* mat4 ViewMatrix */
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GPU_UNIFORM_MODELVIEW, /* mat4 ModelViewMatrix */
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GPU_UNIFORM_PROJECTION, /* mat4 ProjectionMatrix */
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GPU_UNIFORM_VIEWPROJECTION, /* mat4 ViewProjectionMatrix */
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GPU_UNIFORM_MVP, /* mat4 ModelViewProjectionMatrix */
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GPU_UNIFORM_MODEL_INV, /* mat4 ModelMatrixInverse */
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GPU_UNIFORM_VIEW_INV, /* mat4 ViewMatrixInverse */
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GPU_UNIFORM_MODELVIEW_INV, /* mat4 ModelViewMatrixInverse */
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GPU_UNIFORM_PROJECTION_INV, /* mat4 ProjectionMatrixInverse */
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GPU_UNIFORM_VIEWPROJECTION_INV, /* mat4 ViewProjectionMatrixInverse */
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GPU_UNIFORM_NORMAL, /* mat3 NormalMatrix */
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GPU_UNIFORM_ORCO, /* vec4 OrcoTexCoFactors[] */
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GPU_UNIFORM_CLIPPLANES, /* vec4 WorldClipPlanes[] */
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GPU_UNIFORM_COLOR, /* vec4 color */
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GPU_UNIFORM_BASE_INSTANCE, /* int baseInstance */
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GPU_UNIFORM_RESOURCE_CHUNK, /* int resourceChunk */
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GPU_UNIFORM_RESOURCE_ID, /* int resourceId */
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GPU_UNIFORM_SRGB_TRANSFORM, /* bool srgbTarget */
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GPU_NUM_UNIFORMS, /* Special value, denotes number of builtin uniforms. */
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} GPUUniformBuiltin;
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typedef enum {
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GPU_UNIFORM_BLOCK_VIEW = 0, /* viewBlock */
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GPU_UNIFORM_BLOCK_MODEL, /* modelBlock */
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GPU_UNIFORM_BLOCK_INFO, /* infoBlock */
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GPU_NUM_UNIFORM_BLOCKS, /* Special value, denotes number of builtin uniforms block. */
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} GPUUniformBlockBuiltin;
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void GPU_shader_set_srgb_uniform(GPUShader *shader);
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int GPU_shader_get_uniform(GPUShader *shader, const char *name);
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int GPU_shader_get_builtin_uniform(GPUShader *shader, int builtin);
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int GPU_shader_get_builtin_block(GPUShader *shader, int builtin);
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int GPU_shader_get_uniform_block(GPUShader *shader, const char *name);
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int GPU_shader_get_uniform_block_binding(GPUShader *shader, const char *name);
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int GPU_shader_get_texture_binding(GPUShader *shader, const char *name);
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void GPU_shader_uniform_vector(
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GPUShader *shader, int location, int length, int arraysize, const float *value);
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void GPU_shader_uniform_vector_int(
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GPUShader *shader, int location, int length, int arraysize, const int *value);
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void GPU_shader_uniform_float(GPUShader *shader, int location, float value);
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void GPU_shader_uniform_int(GPUShader *shader, int location, int value);
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void GPU_shader_uniform_1i(GPUShader *sh, const char *name, int value);
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void GPU_shader_uniform_1b(GPUShader *sh, const char *name, bool value);
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void GPU_shader_uniform_1f(GPUShader *sh, const char *name, float value);
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void GPU_shader_uniform_2f(GPUShader *sh, const char *name, float x, float y);
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void GPU_shader_uniform_3f(GPUShader *sh, const char *name, float x, float y, float z);
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void GPU_shader_uniform_4f(GPUShader *sh, const char *name, float x, float y, float z, float w);
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void GPU_shader_uniform_2fv(GPUShader *sh, const char *name, const float data[2]);
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void GPU_shader_uniform_3fv(GPUShader *sh, const char *name, const float data[3]);
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void GPU_shader_uniform_4fv(GPUShader *sh, const char *name, const float data[4]);
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void GPU_shader_uniform_mat4(GPUShader *sh, const char *name, const float data[4][4]);
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void GPU_shader_uniform_2fv_array(GPUShader *sh, const char *name, int len, const float (*val)[2]);
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void GPU_shader_uniform_4fv_array(GPUShader *sh, const char *name, int len, const float (*val)[4]);
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int GPU_shader_get_attribute(GPUShader *shader, const char *name);
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void GPU_shader_set_framebuffer_srgb_target(int use_srgb_to_linear);
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/* Builtin/Non-generated shaders */
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typedef enum eGPUBuiltinShader {
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/* specialized drawing */
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GPU_SHADER_TEXT,
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GPU_SHADER_KEYFRAME_DIAMOND,
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GPU_SHADER_SIMPLE_LIGHTING,
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/* for simple 2D drawing */
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/**
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* Take a single color for all the vertices and a 2D position for each vertex.
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*
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* \param color: uniform vec4
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* \param pos: in vec2
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*/
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GPU_SHADER_2D_UNIFORM_COLOR,
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/**
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* Take a 2D position and color for each vertex without color interpolation.
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*
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* \param color: in vec4
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* \param pos: in vec2
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*/
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GPU_SHADER_2D_FLAT_COLOR,
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/**
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* Take a 2D position and color for each vertex with linear interpolation in window space.
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*
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* \param color: in vec4
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* \param pos: in vec2
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*/
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GPU_SHADER_2D_SMOOTH_COLOR,
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GPU_SHADER_2D_IMAGE,
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GPU_SHADER_2D_IMAGE_COLOR,
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GPU_SHADER_2D_IMAGE_DESATURATE_COLOR,
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GPU_SHADER_2D_IMAGE_RECT_COLOR,
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GPU_SHADER_2D_IMAGE_MULTI_RECT_COLOR,
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GPU_SHADER_2D_CHECKER,
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GPU_SHADER_2D_DIAG_STRIPES,
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/* for simple 3D drawing */
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/**
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* Take a single color for all the vertices and a 3D position for each vertex.
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*
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* \param color: uniform vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_UNIFORM_COLOR,
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GPU_SHADER_3D_CLIPPED_UNIFORM_COLOR,
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/**
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* Take a 3D position and color for each vertex without color interpolation.
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*
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* \param color: in vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_FLAT_COLOR,
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/**
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* Take a 3D position and color for each vertex with perspective correct interpolation.
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*
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* \param color: in vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_SMOOTH_COLOR,
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/**
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* Take a single color for all the vertices and a 3D position for each vertex.
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* Used for drawing wide lines.
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*
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* \param color: uniform vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_POLYLINE_UNIFORM_COLOR,
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GPU_SHADER_3D_POLYLINE_CLIPPED_UNIFORM_COLOR,
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/**
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* Take a 3D position and color for each vertex without color interpolation.
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* Used for drawing wide lines.
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*
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* \param color: in vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_POLYLINE_FLAT_COLOR,
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/**
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* Take a 3D position and color for each vertex with perspective correct interpolation.
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* Used for drawing wide lines.
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*
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* \param color: in vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_POLYLINE_SMOOTH_COLOR,
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/**
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* Take a 3D position for each vertex and output only depth.
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* Used for drawing wide lines.
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*
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_DEPTH_ONLY,
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/* basic image drawing */
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GPU_SHADER_2D_IMAGE_OVERLAYS_MERGE,
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GPU_SHADER_2D_IMAGE_OVERLAYS_STEREO_MERGE,
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GPU_SHADER_2D_IMAGE_SHUFFLE_COLOR,
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/* points */
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/**
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* Draw round points with a hardcoded size.
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* Take a single color for all the vertices and a 2D position for each vertex.
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*
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* \param color: uniform vec4
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* \param pos: in vec2
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*/
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GPU_SHADER_2D_POINT_FIXED_SIZE_UNIFORM_COLOR,
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/**
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* Draw round points with a constant size.
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* Take a single color for all the vertices and a 2D position for each vertex.
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*
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* \param size: uniform float
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* \param color: uniform vec4
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* \param pos: in vec2
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*/
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GPU_SHADER_2D_POINT_UNIFORM_SIZE_UNIFORM_COLOR_AA,
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/**
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* Draw round points with a constant size and an outline.
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* Take a single color for all the vertices and a 2D position for each vertex.
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*
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* \param size: uniform float
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* \param outlineWidth: uniform float
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* \param color: uniform vec4
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* \param outlineColor: uniform vec4
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* \param pos: in vec2
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*/
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GPU_SHADER_2D_POINT_UNIFORM_SIZE_UNIFORM_COLOR_OUTLINE_AA,
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/**
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* Draw round points with a constant size and an outline.
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* Take a 2D position and a color for each vertex.
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*
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* \param size: uniform float
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* \param outlineWidth: uniform float
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* \param outlineColor: uniform vec4
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* \param color: in vec4
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* \param pos: in vec2
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*/
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GPU_SHADER_2D_POINT_UNIFORM_SIZE_VARYING_COLOR_OUTLINE_AA,
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/**
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* Draw round points with a constant size and an outline.
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* Take a 2D position and a color for each vertex.
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*
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* \param size: in float
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* \param color: in vec4
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* \param pos: in vec2
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*/
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GPU_SHADER_2D_POINT_VARYING_SIZE_VARYING_COLOR,
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/**
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* Draw round points with a hardcoded size.
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* Take a single color for all the vertices and a 3D position for each vertex.
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*
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* \param color: uniform vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_POINT_FIXED_SIZE_UNIFORM_COLOR,
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/**
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* Draw round points with a hardcoded size.
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* Take a single color for all the vertices and a 3D position for each vertex.
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*
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* \param color: uniform vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_POINT_FIXED_SIZE_VARYING_COLOR,
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/**
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* Draw round points with a constant size.
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* Take a single color for all the vertices and a 3D position for each vertex.
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*
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* \param size: uniform float
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* \param color: uniform vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_POINT_UNIFORM_SIZE_UNIFORM_COLOR_AA,
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/**
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* Draw round points with a constant size and an outline.
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* Take a single color for all the vertices and a 3D position for each vertex.
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*
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* \param size: uniform float
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* \param outlineWidth: uniform float
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* \param color: uniform vec4
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* \param outlineColor: uniform vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_POINT_UNIFORM_SIZE_UNIFORM_COLOR_OUTLINE_AA,
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/**
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* Draw round points with a constant size and an outline.
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* Take a single color for all the vertices and a 3D position for each vertex.
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*
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* \param color: uniform vec4
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* \param size: in float
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_POINT_VARYING_SIZE_UNIFORM_COLOR,
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/**
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* Draw round points with a constant size and an outline.
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* Take a 3D position and a color for each vertex.
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*
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* \param size: in float
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* \param color: in vec4
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* \param pos: in vec3
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*/
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GPU_SHADER_3D_POINT_VARYING_SIZE_VARYING_COLOR,
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/* lines */
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GPU_SHADER_2D_LINE_DASHED_UNIFORM_COLOR,
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GPU_SHADER_3D_LINE_DASHED_UNIFORM_COLOR,
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/* instance */
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GPU_SHADER_INSTANCE_VARIYING_COLOR_VARIYING_SIZE, /* Uniformly scaled */
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/* grease pencil drawing */
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GPU_SHADER_GPENCIL_STROKE,
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GPU_SHADER_GPENCIL_FILL,
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/* specialized for widget drawing */
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GPU_SHADER_2D_AREA_EDGES,
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GPU_SHADER_2D_WIDGET_BASE,
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GPU_SHADER_2D_WIDGET_BASE_INST,
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GPU_SHADER_2D_WIDGET_SHADOW,
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GPU_SHADER_2D_NODELINK,
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GPU_SHADER_2D_NODELINK_INST,
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/* specialized for edituv drawing */
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GPU_SHADER_2D_UV_UNIFORM_COLOR,
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GPU_SHADER_2D_UV_VERTS,
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GPU_SHADER_2D_UV_FACEDOTS,
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GPU_SHADER_2D_UV_EDGES,
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GPU_SHADER_2D_UV_EDGES_SMOOTH,
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GPU_SHADER_2D_UV_FACES,
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GPU_SHADER_2D_UV_FACES_STRETCH_AREA,
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GPU_SHADER_2D_UV_FACES_STRETCH_ANGLE,
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} eGPUBuiltinShader;
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#define GPU_SHADER_BUILTIN_LEN (GPU_SHADER_2D_UV_FACES_STRETCH_ANGLE + 1)
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/** Support multiple configurations. */
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typedef enum eGPUShaderConfig {
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GPU_SHADER_CFG_DEFAULT = 0,
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GPU_SHADER_CFG_CLIPPED = 1,
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} eGPUShaderConfig;
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#define GPU_SHADER_CFG_LEN (GPU_SHADER_CFG_CLIPPED + 1)
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typedef struct GPUShaderConfigData {
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const char *lib;
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const char *def;
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} GPUShaderConfigData;
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/* gpu_shader.c */
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extern const GPUShaderConfigData GPU_shader_cfg_data[GPU_SHADER_CFG_LEN];
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GPUShader *GPU_shader_get_builtin_shader_with_config(eGPUBuiltinShader shader,
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eGPUShaderConfig sh_cfg);
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GPUShader *GPU_shader_get_builtin_shader(eGPUBuiltinShader shader);
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void GPU_shader_get_builtin_shader_code(eGPUBuiltinShader shader,
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const char **r_vert,
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const char **r_frag,
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const char **r_geom,
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const char **r_defines);
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void GPU_shader_free_builtin_shaders(void);
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/* Vertex attributes for shaders */
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/* Hardware limit is 16. Position attribute is always needed so we reduce to 15.
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* This makes sure the GPUVertexFormat name buffer does not overflow. */
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#define GPU_MAX_ATTR 15
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/* Determined by the maximum uniform buffer size divided by chunk size. */
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#define GPU_MAX_UNIFORM_ATTR 8
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#ifdef __cplusplus
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}
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#endif
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