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https://github.com/celisej567/mcpe.git
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f4855d38b6
* * Make more GL vertex buffer related functions use the xgl prefix. This allows me to later overload them in case I want to try to emulate vertex buffers in software. * * Add (incomplete) GL VBO emulation. Works well enough but it's very slow. * * Define USE_HARDWARE_GL_BUFFERS again.
137 lines
2.7 KiB
C++
137 lines
2.7 KiB
C++
/********************************************************************
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Minecraft: Pocket Edition - Decompilation Project
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Copyright (C) 2023 iProgramInCpp
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The following code is licensed under the BSD 1 clause license.
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SPDX-License-Identifier: BSD-1-Clause
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********************************************************************/
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#include "RenderList.hpp"
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#include "Tesselator.hpp"
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#include <cstddef>
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constexpr int C_MAX_RENDERS = 3072;
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RenderList::RenderList()
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{
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m_posX = 0.0f;
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m_posY = 0.0f;
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m_posZ = 0.0f;
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field_14 = 0;
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field_18 = false;
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field_19 = false;
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field_1C = 0;
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field_C = new int[C_MAX_RENDERS];
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field_10 = new RenderChunk[C_MAX_RENDERS];
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}
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RenderList::~RenderList()
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{
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if (field_C)
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delete[] field_C;
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if (field_10)
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delete[] field_10;
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}
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void RenderList::add(int x)
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{
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// @BUG: If too many chunks are rendered, this has the potential to overflow.
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#ifndef ORIGINAL_CODE
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if (field_14 == C_MAX_RENDERS)
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{
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render();
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init(m_posX, m_posY, m_posZ);
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field_1C = 0;
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field_19 = false;
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}
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#endif
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field_C[field_14] = x;
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if (field_14 == C_MAX_RENDERS)
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render();
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}
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void RenderList::addR(const RenderChunk& rc)
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{
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// @BUG: If too many chunks are rendered, this has the potential to overflow.
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#ifndef ORIGINAL_CODE
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if (field_14 == C_MAX_RENDERS)
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{
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render();
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init(m_posX, m_posY, m_posZ);
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field_1C = 0;
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field_19 = false;
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}
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#endif
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field_10[field_14] = rc;
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}
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void RenderList::clear()
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{
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field_18 = false;
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field_19 = false;
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}
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void RenderList::init(float x, float y, float z)
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{
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m_posX = x;
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m_posY = y;
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m_posZ = z;
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field_14 = 0;
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field_18 = true;
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}
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void RenderList::render()
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{
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if (!field_18) return;
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if (!field_19)
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{
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field_19 = true;
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field_1C = field_14;
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field_14 = 0;
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}
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if (field_14 < field_1C)
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{
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glPushMatrix();
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glTranslatef(-m_posX, -m_posY, -m_posZ);
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renderChunks();
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glPopMatrix();
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}
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}
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void RenderList::renderChunks()
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{
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xglEnableClientState(GL_VERTEX_ARRAY);
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xglEnableClientState(GL_COLOR_ARRAY);
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xglEnableClientState(GL_TEXTURE_COORD_ARRAY);
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if (field_1C > 0)
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{
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for (int i = 0; i < field_1C; i++)
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{
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RenderChunk& chk = field_10[i];
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glPushMatrix();
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glTranslatef(chk.field_C, chk.field_10, chk.field_14);
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xglBindBuffer(GL_ARRAY_BUFFER, chk.field_0);
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xglVertexPointer (3, GL_FLOAT, sizeof(Tesselator::Vertex), (void*)offsetof(Tesselator::Vertex, m_x));
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xglTexCoordPointer(2, GL_FLOAT, sizeof(Tesselator::Vertex), (void*)offsetof(Tesselator::Vertex, m_u));
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xglColorPointer (4, GL_UNSIGNED_BYTE, sizeof(Tesselator::Vertex), (void*)offsetof(Tesselator::Vertex, m_color));
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xglDrawArrays(GL_TRIANGLES, 0, chk.field_4);
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glPopMatrix();
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}
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}
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xglDisableClientState(GL_VERTEX_ARRAY);
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xglDisableClientState(GL_COLOR_ARRAY);
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xglDisableClientState(GL_TEXTURE_COORD_ARRAY);
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}
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