108 lines
2.6 KiB
C++
108 lines
2.6 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HWUI_GLOP_H
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#define ANDROID_HWUI_GLOP_H
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#include "Matrix.h"
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#include "Rect.h"
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#include "utils/Macros.h"
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <SkXfermode.h>
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namespace android {
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namespace uirenderer {
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class Program;
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/*
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* Enumerates optional vertex attributes
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*
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* Position is always enabled by MeshState, these other attributes
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* are enabled/disabled dynamically based on mesh content.
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*/
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enum VertexAttribFlags {
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// NOTE: position attribute always enabled
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kTextureCoord_Attrib = 1 << 0,
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kColor_Attrib = 1 << 1,
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kAlpha_Attrib = 1 << 2,
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};
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/**
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* Structure containing all data required to issue a single OpenGL draw
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*
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* Includes all of the mesh, fill, and GL state required to perform
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* the operation. Pieces of data are either directly copied into the
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* structure, or stored as a pointer or GL object reference to data
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* managed
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*/
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// TODO: PREVENT_COPY_AND_ASSIGN(...) or similar
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struct Glop {
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Rect bounds;
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struct Mesh {
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VertexAttribFlags vertexFlags;
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GLuint primitiveMode; // GL_TRIANGLES and GL_TRIANGLE_STRIP supported
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GLuint vertexBufferObject;
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GLuint indexBufferObject;
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int vertexCount;
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GLsizei stride;
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} mesh;
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struct Fill {
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Program* program;
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struct Color {
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float a, r, g, b;
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} color;
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/* TODO
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union shader {
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//...
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}; TODO
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union filter {
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//color
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//matrix + vector
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};
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*/
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} fill;
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struct Transform {
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Matrix4 ortho; // TODO: out of op, since this is static per FBO
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Matrix4 modelView;
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Matrix4 canvas;
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bool offset;
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} transform;
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struct Blend {
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GLenum src;
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GLenum dst;
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} blend;
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/**
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* Additional render state to enumerate:
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* - scissor + (bits for whether each of LTRB needed?)
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* - stencil mode (draw into, mask, count, etc)
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*/
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};
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} /* namespace uirenderer */
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} /* namespace android */
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#endif // ANDROID_HWUI_GLOP_H
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