Clément Foucault
efc97b3919
This changes the drawing paradigm a bit. The VAO configuration is done JIT-style and depends on context active shader. This is to allow more flexibility for implementations to do optimization at lower level. The vao cache is now its own class to isolate the concept. It is this class that is reference by the GLContext for ownership of the containing VAO ids.
118 lines
4.3 KiB
C++
118 lines
4.3 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) 2016 by Mike Erwin.
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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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* GPU shader interface (C --> GLSL)
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*/
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#pragma once
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#include "GPU_common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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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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typedef struct GPUShaderInput {
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uint32_t name_offset;
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uint32_t name_hash;
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int32_t location;
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/** Defined at interface creation or in shader. Only for Samplers, UBOs and Vertex Attribs. */
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int32_t binding;
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} GPUShaderInput;
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#define GPU_SHADERINTERFACE_REF_ALLOC_COUNT 16
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typedef struct GPUShaderInterface {
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/** Buffer containing all inputs names separated by '\0'. */
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char *name_buffer;
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/** Reference to GPUBatches using this interface */
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void **batches;
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uint batches_len;
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/** Input counts. */
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uint attribute_len;
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uint ubo_len;
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uint uniform_len;
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/** Enabled bindpoints that needs to be fed with data. */
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uint16_t enabled_attr_mask;
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uint16_t enabled_ubo_mask;
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uint64_t enabled_tex_mask;
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/** Opengl Location of builtin uniforms. Fast access, no lookup needed. */
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int32_t builtins[GPU_NUM_UNIFORMS];
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int32_t builtin_blocks[GPU_NUM_UNIFORM_BLOCKS];
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/** Flat array. In this order: Attributes, Ubos, Uniforms. */
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GPUShaderInput inputs[0];
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} GPUShaderInterface;
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GPUShaderInterface *GPU_shaderinterface_create(int32_t program_id);
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void GPU_shaderinterface_discard(GPUShaderInterface *);
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const GPUShaderInput *GPU_shaderinterface_uniform(const GPUShaderInterface *, const char *name);
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int32_t GPU_shaderinterface_uniform_builtin(const GPUShaderInterface *shaderface,
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GPUUniformBuiltin builtin);
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int32_t GPU_shaderinterface_block_builtin(const GPUShaderInterface *shaderface,
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GPUUniformBlockBuiltin builtin);
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const GPUShaderInput *GPU_shaderinterface_ubo(const GPUShaderInterface *, const char *name);
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const GPUShaderInput *GPU_shaderinterface_attr(const GPUShaderInterface *, const char *name);
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/* keep track of batches using this interface */
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void GPU_shaderinterface_add_batch_ref(GPUShaderInterface *interface, void *cache);
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void GPU_shaderinterface_remove_batch_ref(GPUShaderInterface *interface, void *cache);
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#ifdef __cplusplus
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}
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#endif
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