145 lines
5.4 KiB
C
145 lines
5.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2016 Blender Foundation. All rights reserved. */
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/** \file
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* \ingroup gpu
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*
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* GPU immediate mode work-alike
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*/
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#pragma once
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#include "GPU_batch.h"
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#include "GPU_immediate_util.h"
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#include "GPU_primitive.h"
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#include "GPU_shader.h"
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#include "GPU_texture.h"
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#include "GPU_vertex_format.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Returns a cleared vertex format, ready for #add_attr. */
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GPUVertFormat *immVertexFormat(void);
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/** Every #immBegin must have a program bound first. */
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void immBindShader(GPUShader *shader);
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/** Call after your last immEnd, or before binding another program. */
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void immUnbindProgram(void);
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/** Must supply exactly vertex_len vertices. */
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void immBegin(GPUPrimType, uint vertex_len);
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/** Can supply fewer vertices. */
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void immBeginAtMost(GPUPrimType, uint max_vertex_len);
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void immEnd(void); /* finishes and draws. */
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/* - #immBegin a batch, then use standard `imm*` functions as usual.
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* - #immEnd will finalize the batch instead of drawing.
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*
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* Then you can draw it as many times as you like!
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* Partially replaces the need for display lists. */
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GPUBatch *immBeginBatch(GPUPrimType, uint vertex_len);
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GPUBatch *immBeginBatchAtMost(GPUPrimType, uint vertex_len);
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/* Provide attribute values that can change per vertex. */
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/* First vertex after immBegin must have all its attributes specified. */
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/* Skipped attributes will continue using the previous value for that attr_id. */
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void immAttr1f(uint attr_id, float x);
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void immAttr2f(uint attr_id, float x, float y);
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void immAttr3f(uint attr_id, float x, float y, float z);
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void immAttr4f(uint attr_id, float x, float y, float z, float w);
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void immAttr2i(uint attr_id, int x, int y);
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void immAttr1u(uint attr_id, uint x);
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void immAttr2s(uint attr_id, short x, short y);
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void immAttr2fv(uint attr_id, const float data[2]);
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void immAttr3fv(uint attr_id, const float data[3]);
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void immAttr4fv(uint attr_id, const float data[4]);
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void immAttr3ub(uint attr_id, unsigned char r, unsigned char g, unsigned char b);
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void immAttr4ub(uint attr_id, unsigned char r, unsigned char g, unsigned char b, unsigned char a);
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void immAttr3ubv(uint attr_id, const unsigned char data[3]);
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void immAttr4ubv(uint attr_id, const unsigned char data[4]);
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/* Explicitly skip an attribute.
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* This advanced option kills automatic value copying for this attr_id. */
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void immAttrSkip(uint attr_id);
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/* Provide one last attribute value & end the current vertex.
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* This is most often used for 2D or 3D position (similar to #glVertex). */
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void immVertex2f(uint attr_id, float x, float y);
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void immVertex3f(uint attr_id, float x, float y, float z);
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void immVertex4f(uint attr_id, float x, float y, float z, float w);
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void immVertex2i(uint attr_id, int x, int y);
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void immVertex2s(uint attr_id, short x, short y);
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void immVertex2fv(uint attr_id, const float data[2]);
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void immVertex3fv(uint attr_id, const float data[3]);
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void immVertex2iv(uint attr_id, const int data[2]);
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/* Provide uniform values that don't change for the entire draw call. */
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void immUniform1i(const char *name, int x);
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void immUniform1f(const char *name, float x);
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void immUniform2f(const char *name, float x, float y);
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void immUniform2fv(const char *name, const float data[2]);
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void immUniform3f(const char *name, float x, float y, float z);
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void immUniform3fv(const char *name, const float data[3]);
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void immUniform4f(const char *name, float x, float y, float z, float w);
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void immUniform4fv(const char *name, const float data[4]);
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/**
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* Note array index is not supported for name (i.e: "array[0]").
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*/
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void immUniformArray4fv(const char *bare_name, const float *data, int count);
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void immUniformMatrix4fv(const char *name, const float data[4][4]);
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void immBindTexture(const char *name, GPUTexture *tex);
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void immBindTextureSampler(const char *name, GPUTexture *tex, eGPUSamplerState state);
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void immBindUniformBuf(const char *name, GPUUniformBuf *ubo);
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/* Convenience functions for setting "uniform vec4 color". */
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/* The RGB functions have implicit alpha = 1.0. */
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void immUniformColor4f(float r, float g, float b, float a);
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void immUniformColor4fv(const float rgba[4]);
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void immUniformColor3f(float r, float g, float b);
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void immUniformColor3fv(const float rgb[3]);
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void immUniformColor3fvAlpha(const float rgb[3], float a);
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void immUniformColor3ub(unsigned char r, unsigned char g, unsigned char b);
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void immUniformColor4ub(unsigned char r, unsigned char g, unsigned char b, unsigned char a);
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void immUniformColor3ubv(const unsigned char rgb[3]);
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void immUniformColor3ubvAlpha(const unsigned char rgb[3], unsigned char a);
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void immUniformColor4ubv(const unsigned char rgba[4]);
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/**
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* Extend #immBindShader to use Blender’s library of built-in shader programs.
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* Use #immUnbindProgram() when done.
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*/
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void immBindBuiltinProgram(eGPUBuiltinShader shader_id);
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/** Extend #immUniformColor to take Blender's themes. */
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void immUniformThemeColor(int color_id);
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void immUniformThemeColorAlpha(int color_id, float a);
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void immUniformThemeColor3(int color_id);
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void immUniformThemeColorShade(int color_id, int offset);
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void immUniformThemeColorShadeAlpha(int color_id, int color_offset, int alpha_offset);
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void immUniformThemeColorBlendShade(int color_id1, int color_id2, float fac, int offset);
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void immUniformThemeColorBlend(int color_id1, int color_id2, float fac);
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void immThemeColorShadeAlpha(int colorid, int coloffset, int alphaoffset);
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#ifdef __cplusplus
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}
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#endif
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