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364 lines
9.1 KiB
C++
364 lines
9.1 KiB
C++
/*************************************************************************/
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/* shader_gles2.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef SHADER_GLES2_H
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#define SHADER_GLES2_H
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#ifdef GLES2_ENABLED
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#include "platform_config.h"
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#ifndef GLES2_INCLUDE_H
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#include <GLES2/gl2.h>
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#else
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#include GLES2_INCLUDE_H
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#endif
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#include "hash_map.h"
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#include "map.h"
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#include "variant.h"
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#include "camera_matrix.h"
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/**
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@author Juan Linietsky <reduzio@gmail.com>
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*/
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class ShaderGLES2 {
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protected:
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struct Enum {
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uint64_t mask;
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uint64_t shift;
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const char *defines[16];
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};
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struct EnumValue {
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uint64_t set_mask;
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uint64_t clear_mask;
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};
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struct AttributePair {
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const char *name;
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int index;
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};
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struct UniformPair {
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const char* name;
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Variant::Type type_hint;
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};
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struct TexUnitPair {
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const char *name;
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int index;
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};
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bool uniforms_dirty;
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private:
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//@TODO Optimize to a fixed set of shader pools and use a LRU
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int uniform_count;
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int texunit_pair_count;
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int conditional_count;
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int vertex_code_start;
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int fragment_code_start;
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int attribute_pair_count;
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struct CustomCode {
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String vertex;
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String vertex_globals;
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String fragment;
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String fragment_globals;
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String light;
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uint32_t version;
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Vector<StringName> custom_uniforms;
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Vector<const char*> custom_defines;
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};
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struct Version {
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GLuint id;
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GLuint vert_id;
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GLuint frag_id;
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GLint *uniform_location;
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Vector<GLint> custom_uniform_locations;
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uint32_t code_version;
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bool ok;
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Version() { code_version=0; ok=false; uniform_location=NULL; }
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};
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Version *version;
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union VersionKey {
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struct {
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uint32_t version;
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uint32_t code_version;
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};
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uint64_t key;
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bool operator==(const VersionKey& p_key) const { return key==p_key.key; }
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bool operator<(const VersionKey& p_key) const { return key<p_key.key; }
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};
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struct VersionKeyHash {
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static _FORCE_INLINE_ uint32_t hash( const VersionKey& p_key) { return HashMapHahserDefault::hash(p_key.key); };
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};
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//this should use a way more cachefriendly version..
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HashMap<VersionKey,Version,VersionKeyHash> version_map;
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HashMap<uint32_t,CustomCode> custom_code_map;
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uint32_t last_custom_code;
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VersionKey conditional_version;
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VersionKey new_conditional_version;
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virtual String get_shader_name() const=0;
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const char** conditional_defines;
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const char** uniform_names;
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const AttributePair *attribute_pairs;
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const TexUnitPair *texunit_pairs;
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const char* vertex_code;
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const char* fragment_code;
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CharString fragment_code0;
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CharString fragment_code1;
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CharString fragment_code2;
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CharString fragment_code3;
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CharString vertex_code0;
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CharString vertex_code1;
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CharString vertex_code2;
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Version * get_current_version();
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static ShaderGLES2 *active;
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_FORCE_INLINE_ void _set_uniform_variant(GLint p_uniform,const Variant& p_value) {
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if (p_uniform<0)
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return; // do none
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switch(p_value.get_type()) {
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case Variant::BOOL:
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case Variant::INT:/* {
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int val=p_value;
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glUniform1i( p_uniform, val );
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} break; */
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case Variant::REAL: {
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real_t val=p_value;
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glUniform1f( p_uniform, val );
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} break;
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case Variant::COLOR: {
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Color val=p_value;
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glUniform4f( p_uniform, val.r, val.g,val.b,val.a );
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} break;
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case Variant::VECTOR2: {
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Vector2 val=p_value;
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glUniform2f( p_uniform, val.x,val.y );
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} break;
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case Variant::VECTOR3: {
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Vector3 val=p_value;
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glUniform3f( p_uniform, val.x,val.y,val.z );
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} break;
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case Variant::PLANE: {
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Plane val=p_value;
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glUniform4f( p_uniform, val.normal.x,val.normal.y,val.normal.z,val.d );
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} break;
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case Variant::MATRIX32: {
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Matrix32 tr=p_value;
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GLfloat matrix[16]={ /* build a 16x16 matrix */
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tr.elements[0][0],
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tr.elements[0][1],
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0,
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0,
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tr.elements[1][0],
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tr.elements[1][1],
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0,
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0,
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0,
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0,
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1,
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0,
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tr.elements[2][0],
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tr.elements[2][1],
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0,
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1
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};
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glUniformMatrix4fv(p_uniform,1,false,matrix);
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} break;
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case Variant::MATRIX3:
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case Variant::TRANSFORM: {
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Transform tr=p_value;
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GLfloat matrix[16]={ /* build a 16x16 matrix */
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tr.basis.elements[0][0],
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tr.basis.elements[1][0],
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tr.basis.elements[2][0],
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0,
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tr.basis.elements[0][1],
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tr.basis.elements[1][1],
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tr.basis.elements[2][1],
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0,
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tr.basis.elements[0][2],
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tr.basis.elements[1][2],
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tr.basis.elements[2][2],
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0,
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tr.origin.x,
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tr.origin.y,
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tr.origin.z,
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1
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};
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glUniformMatrix4fv(p_uniform,1,false,matrix);
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} break;
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default: { ERR_FAIL(); } // do nothing
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}
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}
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Map<uint32_t,Variant> uniform_defaults;
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Map<uint32_t,CameraMatrix> uniform_cameras;
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protected:
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_FORCE_INLINE_ int _get_uniform(int p_which) const;
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_FORCE_INLINE_ void _set_conditional(int p_which, bool p_value);
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void setup(const char** p_conditional_defines, int p_conditional_count,const char** p_uniform_names,int p_uniform_count, const AttributePair* p_attribute_pairs, int p_attribute_count, const TexUnitPair *p_texunit_pairs, int p_texunit_pair_count,const char*p_vertex_code, const char *p_fragment_code,int p_vertex_code_start,int p_fragment_code_start);
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ShaderGLES2();
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public:
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enum {
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CUSTOM_SHADER_DISABLED=0
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};
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GLint get_uniform_location(const String& p_name) const;
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GLint get_uniform_location(int p_uniform) const;
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static _FORCE_INLINE_ ShaderGLES2 *get_active() { return active; };
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bool bind();
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void unbind();
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void bind_uniforms();
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inline GLuint get_program() const { return version?version->id:0; }
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void clear_caches();
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uint32_t create_custom_shader();
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void set_custom_shader_code(uint32_t p_id,const String& p_vertex, const String& p_vertex_globals,const String& p_fragment,const String& p_p_light,const String& p_fragment_globals,const Vector<StringName>& p_uniforms,const Vector<const char*> &p_custom_defines);
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void set_custom_shader(uint32_t p_id);
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void free_custom_shader(uint32_t p_id);
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void set_uniform_default(int p_idx, const Variant& p_value) {
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if (p_value.get_type()==Variant::NIL) {
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uniform_defaults.erase(p_idx);
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} else {
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uniform_defaults[p_idx]=p_value;
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}
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uniforms_dirty = true;
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};
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uint32_t get_version() const { return new_conditional_version.version; }
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void set_uniform_camera(int p_idx, const CameraMatrix& p_mat) {
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uniform_cameras[p_idx] = p_mat;
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uniforms_dirty = true;
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};
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_FORCE_INLINE_ void set_custom_uniform(int p_idx, const Variant& p_value) {
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ERR_FAIL_COND(!version);
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ERR_FAIL_INDEX(p_idx,version->custom_uniform_locations.size());
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_set_uniform_variant( version->custom_uniform_locations[p_idx], p_value );
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}
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_FORCE_INLINE_ GLint get_custom_uniform_location(int p_idx) {
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ERR_FAIL_COND_V(!version,-1);
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ERR_FAIL_INDEX_V(p_idx,version->custom_uniform_locations.size(),-1);
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return version->custom_uniform_locations[p_idx];
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}
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virtual void init()=0;
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void finish();
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virtual ~ShaderGLES2();
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};
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// called a lot, made inline
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int ShaderGLES2::_get_uniform(int p_which) const {
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ERR_FAIL_INDEX_V( p_which, uniform_count,-1 );
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ERR_FAIL_COND_V( !version, -1 );
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return version->uniform_location[p_which];
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}
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void ShaderGLES2::_set_conditional(int p_which, bool p_value) {
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ERR_FAIL_INDEX(p_which,conditional_count);
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if (p_value)
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new_conditional_version.version|=(1<<p_which);
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else
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new_conditional_version.version&=~(1<<p_which);
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}
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#endif
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#endif
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