394 lines
12 KiB
C++
394 lines
12 KiB
C++
/*
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Copyright (c) 2013 yvt
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This file is part of OpenSpades.
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OpenSpades 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 3 of the License, or
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(at your option) any later version.
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OpenSpades 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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You should have received a copy of the GNU General Public License
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along with OpenSpades. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "GLSoftSpriteRenderer.h"
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#include <Core/Debug.h>
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#include "GLFramebufferManager.h"
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#include "GLImage.h"
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#include "GLProfiler.h"
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#include "GLProgram.h"
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#include "GLQuadRenderer.h"
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#include "GLRenderer.h"
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#include "IGLDevice.h"
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#include "SWFeatureLevel.h" // for fastRcp
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namespace spades {
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namespace draw {
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GLSoftSpriteRenderer::GLSoftSpriteRenderer(GLRenderer *renderer)
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: renderer(renderer),
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device(renderer->GetGLDevice()),
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settings(renderer->GetSettings()),
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projectionViewMatrix("projectionViewMatrix"),
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rightVector("rightVector"),
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upVector("upVector"),
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frontVector("frontVector"),
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viewOriginVector("viewOriginVector"),
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texture("mainTexture"),
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depthTexture("depthTexture"),
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viewMatrix("viewMatrix"),
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fogDistance("fogDistance"),
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fogColor("fogColor"),
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zNearFar("zNearFar"),
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positionAttribute("positionAttribute"),
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spritePosAttribute("spritePosAttribute"),
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colorAttribute("colorAttribute") {
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SPADES_MARK_FUNCTION();
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program = renderer->RegisterProgram("Shaders/SoftSprite.program");
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}
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GLSoftSpriteRenderer::~GLSoftSpriteRenderer() { SPADES_MARK_FUNCTION(); }
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void GLSoftSpriteRenderer::Add(spades::draw::GLImage *img, spades::Vector3 center,
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float rad, float ang, Vector4 color) {
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SPADES_MARK_FUNCTION_DEBUG();
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const client::SceneDefinition &def = renderer->GetSceneDef();
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Sprite spr;
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spr.image = img;
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spr.center = center;
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spr.radius = rad;
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spr.angle = ang;
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if (settings.r_hdr) {
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// linearize color
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if (color.x > color.w || color.y > color.w || color.z > color.w) {
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// emissive material
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color.x *= color.x;
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color.y *= color.y;
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color.z *= color.z;
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} else {
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// scattering/absorptive material
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float rcp = fastRcp(color.w + .01);
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color.x *= color.x * rcp;
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color.y *= color.y * rcp;
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color.z *= color.z * rcp;
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}
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}
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spr.color = color;
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spr.area = rad * rad * 4.f /
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std::max(Vector3::Dot(center - def.viewOrigin, def.viewAxis[2]), 0.01f);
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sprites.push_back(spr);
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}
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void GLSoftSpriteRenderer::Clear() {
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SPADES_MARK_FUNCTION();
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sprites.clear();
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}
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float GLSoftSpriteRenderer::LayerForSprite(const Sprite &spr) {
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float v = (spr.area - thresLow) / thresRange;
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if (v < 0.f)
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v = 0.f;
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if (v > 1.f)
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v = 1.f;
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return v;
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}
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void GLSoftSpriteRenderer::Render() {
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SPADES_MARK_FUNCTION();
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lastImage = NULL;
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program->Use();
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device->Enable(IGLDevice::Blend, true);
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device->BlendFunc(IGLDevice::One, IGLDevice::OneMinusSrcAlpha);
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projectionViewMatrix(program);
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rightVector(program);
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frontVector(program);
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viewOriginVector(program);
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upVector(program);
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texture(program);
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depthTexture(program);
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viewMatrix(program);
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fogDistance(program);
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fogColor(program);
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zNearFar(program);
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positionAttribute(program);
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spritePosAttribute(program);
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colorAttribute(program);
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projectionViewMatrix.SetValue(renderer->GetProjectionViewMatrix());
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viewMatrix.SetValue(renderer->GetViewMatrix());
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fogDistance.SetValue(renderer->GetFogDistance());
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Vector3 fogCol = renderer->GetFogColor();
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fogCol *= fogCol; // linearize
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fogColor.SetValue(fogCol.x, fogCol.y, fogCol.z);
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const client::SceneDefinition &def = renderer->GetSceneDef();
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rightVector.SetValue(def.viewAxis[0].x, def.viewAxis[0].y, def.viewAxis[0].z);
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upVector.SetValue(def.viewAxis[1].x, def.viewAxis[1].y, def.viewAxis[1].z);
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frontVector.SetValue(def.viewAxis[2].x, def.viewAxis[2].y, def.viewAxis[2].z);
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viewOriginVector.SetValue(def.viewOrigin.x, def.viewOrigin.y, def.viewOrigin.z);
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texture.SetValue(0);
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depthTexture.SetValue(1);
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zNearFar.SetValue(def.zNear, def.zFar);
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device->ActiveTexture(1);
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device->BindTexture(IGLDevice::Texture2D,
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renderer->GetFramebufferManager()->GetDepthTexture());
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device->ActiveTexture(0);
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device->EnableVertexAttribArray(positionAttribute(), true);
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device->EnableVertexAttribArray(spritePosAttribute(), true);
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device->EnableVertexAttribArray(colorAttribute(), true);
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thresLow = tanf(def.fovX * .5f) * tanf(def.fovY * .5f) * 1.8f;
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thresRange = thresLow * .5f;
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// full-resolution sprites
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{
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GLProfiler::Context measure(renderer->GetGLProfiler(), "Full Resolution");
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for (size_t i = 0; i < sprites.size(); i++) {
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Sprite &spr = sprites[i];
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float layer = LayerForSprite(spr);
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if (layer == 1.f)
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continue;
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if (spr.image != lastImage) {
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Flush();
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lastImage = spr.image;
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SPAssert(vertices.empty());
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}
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Vertex v;
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v.x = spr.center.x;
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v.y = spr.center.y;
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v.z = spr.center.z;
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v.radius = spr.radius;
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v.angle = spr.angle;
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v.r = spr.color.x;
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v.g = spr.color.y;
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v.b = spr.color.z;
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v.a = spr.color.w;
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float fade = 1.f - layer;
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v.r *= fade;
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v.g *= fade;
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v.b *= fade;
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v.a *= fade;
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uint32_t idx = (uint32_t)vertices.size();
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v.sx = -1;
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v.sy = -1;
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vertices.push_back(v);
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v.sx = 1;
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v.sy = -1;
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vertices.push_back(v);
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v.sx = -1;
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v.sy = 1;
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vertices.push_back(v);
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v.sx = 1;
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v.sy = 1;
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vertices.push_back(v);
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indices.push_back(idx);
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indices.push_back(idx + 1);
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indices.push_back(idx + 2);
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indices.push_back(idx + 1);
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indices.push_back(idx + 3);
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indices.push_back(idx + 2);
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}
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Flush();
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}
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// low-res sprites
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IGLDevice::UInteger lastFb = device->GetInteger(IGLDevice::FramebufferBinding);
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int sW = device->ScreenWidth(), sH = device->ScreenHeight();
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int lW = (sW + 3) / 4, lH = (sH + 3) / 4;
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int numLowResSprites = 0;
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GLColorBuffer buf = renderer->GetFramebufferManager()->CreateBufferHandle(lW, lH, true);
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device->BindFramebuffer(IGLDevice::Framebuffer, buf.GetFramebuffer());
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device->ClearColor(0.f, 0.f, 0.f, 0.f);
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device->Clear(IGLDevice::ColorBufferBit);
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device->BlendFunc(IGLDevice::One, IGLDevice::OneMinusSrcAlpha);
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device->Viewport(0, 0, lW, lH);
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{
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GLProfiler::Context measure(renderer->GetGLProfiler(), "Low Resolution");
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for (size_t i = 0; i < sprites.size(); i++) {
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Sprite &spr = sprites[i];
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float layer = LayerForSprite(spr);
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if (layer == 0.f)
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continue;
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if (spr.image != lastImage) {
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Flush();
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lastImage = spr.image;
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SPAssert(vertices.empty());
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}
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numLowResSprites++;
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Vertex v;
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v.x = spr.center.x;
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v.y = spr.center.y;
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v.z = spr.center.z;
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v.radius = spr.radius;
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v.angle = spr.angle;
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v.r = spr.color.x;
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v.g = spr.color.y;
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v.b = spr.color.z;
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v.a = spr.color.w;
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float fade = layer;
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v.r *= fade;
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v.g *= fade;
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v.b *= fade;
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v.a *= fade;
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uint32_t idx = (uint32_t)vertices.size();
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v.sx = -1;
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v.sy = -1;
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vertices.push_back(v);
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v.sx = 1;
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v.sy = -1;
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vertices.push_back(v);
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v.sx = -1;
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v.sy = 1;
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vertices.push_back(v);
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v.sx = 1;
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v.sy = 1;
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vertices.push_back(v);
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indices.push_back(idx);
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indices.push_back(idx + 1);
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indices.push_back(idx + 2);
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indices.push_back(idx + 1);
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indices.push_back(idx + 3);
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indices.push_back(idx + 2);
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}
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Flush();
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}
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// finalize
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device->ActiveTexture(1);
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device->BindTexture(IGLDevice::Texture2D, 0);
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device->ActiveTexture(0);
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device->BindTexture(IGLDevice::Texture2D, 0);
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device->EnableVertexAttribArray(positionAttribute(), false);
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device->EnableVertexAttribArray(spritePosAttribute(), false);
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device->EnableVertexAttribArray(colorAttribute(), false);
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// composite downsampled sprite
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device->BlendFunc(IGLDevice::One, IGLDevice::OneMinusSrcAlpha);
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if (numLowResSprites > 0) {
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GLProfiler::Context measure(renderer->GetGLProfiler(), "Finalize");
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GLQuadRenderer qr(device);
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// do gaussian blur
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GLProgram *program =
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renderer->RegisterProgram("Shaders/PostFilters/Gauss1D.program");
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static GLProgramAttribute blur_positionAttribute("positionAttribute");
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static GLProgramUniform blur_textureUniform("mainTexture");
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static GLProgramUniform blur_unitShift("unitShift");
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program->Use();
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blur_positionAttribute(program);
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blur_textureUniform(program);
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blur_unitShift(program);
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blur_textureUniform.SetValue(0);
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device->ActiveTexture(0);
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qr.SetCoordAttributeIndex(blur_positionAttribute());
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device->Enable(IGLDevice::Blend, false);
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// x-direction
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GLColorBuffer buf2 =
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renderer->GetFramebufferManager()->CreateBufferHandle(lW, lH, true);
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device->BindTexture(IGLDevice::Texture2D, buf.GetTexture());
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device->BindFramebuffer(IGLDevice::Framebuffer, buf2.GetFramebuffer());
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blur_unitShift.SetValue(1.f / lW, 0.f);
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qr.Draw();
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buf.Release();
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// x-direction
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GLColorBuffer buf3 =
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renderer->GetFramebufferManager()->CreateBufferHandle(lW, lH, true);
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device->BindTexture(IGLDevice::Texture2D, buf2.GetTexture());
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device->BindFramebuffer(IGLDevice::Framebuffer, buf3.GetFramebuffer());
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blur_unitShift.SetValue(0.f, 1.f / lH);
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qr.Draw();
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buf2.Release();
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buf = buf3;
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device->Enable(IGLDevice::Blend, true);
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// composite
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program = renderer->RegisterProgram("Shaders/PostFilters/PassThrough.program");
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static GLProgramAttribute positionAttribute("positionAttribute");
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static GLProgramUniform colorUniform("colorUniform");
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static GLProgramUniform textureUniform("mainTexture");
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static GLProgramUniform texCoordRange("texCoordRange");
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positionAttribute(program);
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textureUniform(program);
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texCoordRange(program);
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colorUniform(program);
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program->Use();
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textureUniform.SetValue(0);
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texCoordRange.SetValue(0.f, 0.f, 1.f, 1.f);
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colorUniform.SetValue(1.f, 1.f, 1.f, 1.f);
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qr.SetCoordAttributeIndex(positionAttribute());
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device->BindFramebuffer(IGLDevice::Framebuffer, lastFb);
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device->BindTexture(IGLDevice::Texture2D, buf.GetTexture());
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device->Viewport(0, 0, sW, sH);
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qr.Draw();
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device->BindTexture(IGLDevice::Texture2D, 0);
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} else {
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device->Viewport(0, 0, sW, sH);
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device->BindFramebuffer(IGLDevice::Framebuffer, lastFb);
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}
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buf.Release();
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}
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void GLSoftSpriteRenderer::Flush() {
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SPADES_MARK_FUNCTION_DEBUG();
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if (vertices.empty())
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return;
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device->VertexAttribPointer(positionAttribute(), 4, IGLDevice::FloatType, false,
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sizeof(Vertex), &(vertices[0].x));
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device->VertexAttribPointer(spritePosAttribute(), 4, IGLDevice::FloatType, false,
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sizeof(Vertex), &(vertices[0].sx));
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device->VertexAttribPointer(colorAttribute(), 4, IGLDevice::FloatType, false,
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sizeof(Vertex), &(vertices[0].r));
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SPAssert(lastImage);
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lastImage->Bind(IGLDevice::Texture2D);
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device->DrawElements(IGLDevice::Triangles,
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static_cast<IGLDevice::Sizei>(indices.size()),
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IGLDevice::UnsignedInt, indices.data());
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vertices.clear();
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indices.clear();
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}
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}
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}
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