janwas
4663ac0fe7
the old debug_assert always ran and tested the expression, which slows down release builds. wrapping them in #ifndef NDEBUG is clumsy. the new ASSERT behaves like assert and ENSURE like the old debug_assert. Let's change any time-critical but not-super-important ENSURE to ASSERT to speed up release builds. (already done in bits.h and unique_range.h) This was SVN commit r9362.
292 lines
8.8 KiB
C++
292 lines
8.8 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Implementation of player colour RenderModifiers.
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*/
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#include "precompiled.h"
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#include "renderer/Renderer.h"
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#include "renderer/PlayerRenderer.h"
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#include "renderer/ShadowMap.h"
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#include "graphics/LightEnv.h"
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#include "graphics/Model.h"
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#include "graphics/TextureManager.h"
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// FastPlayerColorRender
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FastPlayerColorRender::FastPlayerColorRender()
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{
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ENSURE(ogl_max_tex_units >= 3);
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}
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FastPlayerColorRender::~FastPlayerColorRender()
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{
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}
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bool FastPlayerColorRender::IsAvailable()
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{
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return (ogl_max_tex_units >= 3);
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}
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int FastPlayerColorRender::BeginPass(int pass)
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{
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ENSURE(pass == 0);
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// Fast player color uses a single pass with three texture environments
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// Note: This uses ARB_texture_env_crossbar (which is checked in GameSetup)
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//
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// We calculate: Result = Color*Texture*(PlayerColor*(1-Texture.a) + 1.0*Texture.a)
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// Algebra gives us:
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// Result = (1 - ((1 - PlayerColor) * (1 - Texture.a)))*Texture*Color
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// TexEnv #0
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pglActiveTextureARB(GL_TEXTURE0);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_ONE_MINUS_SRC_ALPHA);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_CONSTANT);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_ONE_MINUS_SRC_COLOR);
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// Don't care about alpha; set it to something harmless
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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// TexEnv #1
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pglActiveTextureARB(GL_TEXTURE0+1);
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glEnable(GL_TEXTURE_2D);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_ONE_MINUS_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PRIMARY_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
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// Don't care about alpha; set it to something harmless
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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// TexEnv #2
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pglActiveTextureARB(GL_TEXTURE0+2);
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glEnable(GL_TEXTURE_2D);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_TEXTURE0);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
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// Don't care about alpha; set it to something harmless
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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pglActiveTextureARB(GL_TEXTURE0);
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return STREAM_POS|STREAM_COLOR|STREAM_UV0;
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}
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bool FastPlayerColorRender::EndPass(int UNUSED(pass))
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{
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// Restore state
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pglActiveTextureARB(GL_TEXTURE1);
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glDisable(GL_TEXTURE_2D);
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pglActiveTextureARB(GL_TEXTURE2);
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glDisable(GL_TEXTURE_2D);
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pglActiveTextureARB(GL_TEXTURE0);
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return true;
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}
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void FastPlayerColorRender::PrepareTexture(int UNUSED(pass), CTexturePtr& texture)
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{
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texture->Bind(2);
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texture->Bind(1);
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texture->Bind(0);
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}
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void FastPlayerColorRender::PrepareModel(int UNUSED(pass), CModel* model)
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{
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// Get the player color
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SMaterialColor colour = model->GetMaterial().GetObjectColor();
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float* color = &colour.r; // because it's stored RGBA
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// Set the texture environment color the player color
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glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, color);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// SlowPlayerColorRender
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SlowPlayerColorRender::SlowPlayerColorRender()
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{
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}
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SlowPlayerColorRender::~SlowPlayerColorRender()
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{
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}
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int SlowPlayerColorRender::BeginPass(int pass)
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{
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// We calculate: Result = (Color*Texture)*Texture.a + (Color*Texture*PlayerColor)*(1-Texture.a)
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// Modulation is done via texture environments, the final interpolation is done via blending
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if (pass == 0)
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{
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// TexEnv #0
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pglActiveTextureARB(GL_TEXTURE0);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PRIMARY_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
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// Don't care about alpha; set it to something harmless
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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// Render it!
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return STREAM_POS|STREAM_COLOR|STREAM_UV0;
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}
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else
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{
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// TexEnv #0
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_CONSTANT);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
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// Alpha = Opacity of non-player colored layer
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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// TexEnv #1
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pglActiveTextureARB(GL_TEXTURE1);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PRIMARY_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
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// Pass alpha unchanged
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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pglActiveTextureARB(GL_TEXTURE0);
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// Setup blending
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glEnable(GL_BLEND);
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glBlendFunc(GL_ONE_MINUS_SRC_ALPHA, GL_SRC_ALPHA);
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glEnable(GL_ALPHA_TEST);
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glAlphaFunc(GL_LESS, 1.0);
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glDepthMask(0);
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// Render it!
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return STREAM_POS|STREAM_COLOR|STREAM_UV0;
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}
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}
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bool SlowPlayerColorRender::EndPass(int pass)
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{
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if (pass == 0)
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return false; // need two passes
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// Restore state
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pglActiveTextureARB(GL_TEXTURE1);
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glDisable(GL_TEXTURE_2D);
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pglActiveTextureARB(GL_TEXTURE0);
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glDisable(GL_BLEND);
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glDisable(GL_ALPHA_TEST);
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glDepthMask(1);
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return true;
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}
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void SlowPlayerColorRender::PrepareTexture(int pass, CTexturePtr& texture)
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{
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if (pass == 1)
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texture->Bind(1);
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texture->Bind(0);
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}
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void SlowPlayerColorRender::PrepareModel(int pass, CModel* model)
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{
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if (pass == 1)
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{
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// Get the player color
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SMaterialColor colour = model->GetMaterial().GetObjectColor();
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float* color = &colour.r; // because it's stored RGBA
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// Set the texture environment color the player color
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glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, color);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////
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// SolidPlayerColorRender
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SolidPlayerColorRender::SolidPlayerColorRender()
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{
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}
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SolidPlayerColorRender::~SolidPlayerColorRender()
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{
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}
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int SolidPlayerColorRender::BeginPass(int UNUSED(pass))
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{
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ogl_tex_bind(0, 0);
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return STREAM_POS;
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}
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bool SolidPlayerColorRender::EndPass(int UNUSED(pass))
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{
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return true;
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}
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void SolidPlayerColorRender::PrepareTexture(int UNUSED(pass), CTexturePtr& UNUSED(texture))
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{
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}
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void SolidPlayerColorRender::PrepareModel(int UNUSED(pass), CModel* model)
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{
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// Get the player color
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SMaterialColor colour = model->GetMaterial().GetPlayerColor();
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// Send the player color
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glColor3f(colour.r, colour.g, colour.b);
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}
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