mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-11-14 16:41:13 +00:00
113 lines
3.4 KiB
C++
113 lines
3.4 KiB
C++
/*
|
|
** Particle drawing
|
|
** Copyright (c) 2016 Magnus Norddahl
|
|
**
|
|
** This software is provided 'as-is', without any express or implied
|
|
** warranty. In no event will the authors be held liable for any damages
|
|
** arising from the use of this software.
|
|
**
|
|
** Permission is granted to anyone to use this software for any purpose,
|
|
** including commercial applications, and to alter it and redistribute it
|
|
** freely, subject to the following restrictions:
|
|
**
|
|
** 1. The origin of this software must not be misrepresented; you must not
|
|
** claim that you wrote the original software. If you use this software
|
|
** in a product, an acknowledgment in the product documentation would be
|
|
** appreciated but is not required.
|
|
** 2. Altered source versions must be plainly marked as such, and must not be
|
|
** misrepresented as being the original software.
|
|
** 3. This notice may not be removed or altered from any source distribution.
|
|
**
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include "templates.h"
|
|
#include "doomdef.h"
|
|
#include "sbar.h"
|
|
#include "r_data/r_translate.h"
|
|
#include "r_poly_particle.h"
|
|
#include "r_poly.h"
|
|
|
|
void RenderPolyParticle::Render(const TriMatrix &worldToClip, const Vec4f &clipPlane, particle_t *particle, subsector_t *sub, uint32_t subsectorDepth, uint32_t stencilValue)
|
|
{
|
|
DVector3 pos = particle->Pos;
|
|
double psize = particle->size / 8.0;
|
|
double zpos = pos.Z;
|
|
|
|
DVector2 points[2] =
|
|
{
|
|
{ pos.X - ViewSin * psize, pos.Y + ViewCos * psize },
|
|
{ pos.X + ViewSin * psize, pos.Y - ViewCos * psize }
|
|
};
|
|
|
|
TriVertex *vertices = PolyVertexBuffer::GetVertices(4);
|
|
if (!vertices)
|
|
return;
|
|
|
|
bool foggy = false;
|
|
int actualextralight = foggy ? 0 : extralight << 4;
|
|
|
|
std::pair<float, float> offsets[4] =
|
|
{
|
|
{ 0.0f, 1.0f },
|
|
{ 1.0f, 1.0f },
|
|
{ 1.0f, 0.0f },
|
|
{ 0.0f, 0.0f },
|
|
};
|
|
|
|
for (int i = 0; i < 4; i++)
|
|
{
|
|
auto &p = (i == 0 || i == 3) ? points[0] : points[1];
|
|
|
|
vertices[i].x = (float)p.X;
|
|
vertices[i].y = (float)p.Y;
|
|
vertices[i].z = (float)(zpos + psize * (2.0 * offsets[i].second - 1.0));
|
|
vertices[i].w = 1.0f;
|
|
vertices[i].varying[0] = (float)(offsets[i].first);
|
|
vertices[i].varying[1] = (float)(1.0f - offsets[i].second);
|
|
}
|
|
|
|
// int color = (particle->color >> 24) & 0xff; // pal index, I think
|
|
bool fullbrightSprite = particle->bright != 0;
|
|
|
|
PolyDrawArgs args;
|
|
|
|
if (fullbrightSprite || swrenderer::fixedlightlev >= 0 || swrenderer::fixedcolormap)
|
|
{
|
|
args.uniforms.light = 256;
|
|
args.uniforms.flags = TriUniforms::fixed_light;
|
|
}
|
|
else
|
|
{
|
|
args.uniforms.light = (uint32_t)((sub->sector->lightlevel + actualextralight) / 255.0f * 256.0f);
|
|
args.uniforms.flags = 0;
|
|
}
|
|
args.uniforms.subsectorDepth = subsectorDepth;
|
|
|
|
if (swrenderer::r_swtruecolor)
|
|
{
|
|
uint32_t alpha = particle->trans;
|
|
args.uniforms.color = (alpha << 24) | (particle->color & 0xffffff);
|
|
}
|
|
else
|
|
{
|
|
args.uniforms.color = ((uint32_t)particle->color) >> 24;
|
|
args.uniforms.srcalpha = particle->trans;
|
|
args.uniforms.destalpha = 255 - particle->trans;
|
|
}
|
|
|
|
args.objectToClip = &worldToClip;
|
|
args.vinput = vertices;
|
|
args.vcount = 4;
|
|
args.mode = TriangleDrawMode::Fan;
|
|
args.ccw = true;
|
|
args.stenciltestvalue = stencilValue;
|
|
args.stencilwritevalue = stencilValue;
|
|
args.SetColormap(sub->sector->ColorMap);
|
|
args.SetClipPlane(clipPlane.x, clipPlane.y, clipPlane.z, clipPlane.w);
|
|
args.subsectorTest = true;
|
|
args.writeStencil = false;
|
|
args.writeSubsector = false;
|
|
args.blendmode = TriBlendMode::AlphaBlend;
|
|
PolyTriangleDrawer::draw(args);
|
|
}
|