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(disabled) proof-of-concept antialiasing

This commit is contained in:
Arisotura 2019-05-10 02:28:26 +02:00
parent 8efc8623ad
commit 92d67a17de
1 changed files with 34 additions and 5 deletions
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39
src/GPU3D_OpenGL43.cpp
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@ -34,6 +34,7 @@ PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers;
PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers;
PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer;
PFNGLFRAMEBUFFERTEXTUREPROC glFramebufferTexture;
PFNGLBLITFRAMEBUFFERPROC glBlitFramebuffer;
PFNGLGENBUFFERSPROC glGenBuffers;
PFNGLDELETEBUFFERSPROC glDeleteBuffers;
@ -595,8 +596,8 @@ u32 NumTriangles;
GLuint TexMemID;
GLuint TexPalMemID;
GLuint FramebufferTex[3];
GLuint FramebufferID, PixelbufferID;
GLuint FramebufferTex[4];
GLuint FramebufferID[2], PixelbufferID;
u8 Framebuffer[512*384*4];
@ -610,6 +611,7 @@ bool InitGLExtensions()
LOADPROC(GLDELETEFRAMEBUFFERS, glDeleteFramebuffers);
LOADPROC(GLBINDFRAMEBUFFER, glBindFramebuffer);
LOADPROC(GLFRAMEBUFFERTEXTURE, glFramebufferTexture);
LOADPROC(GLBLITFRAMEBUFFER, glBlitFramebuffer);
LOADPROC(GLGENBUFFERS, glGenBuffers);
LOADPROC(GLDELETEBUFFERS, glDeleteBuffers);
@ -806,6 +808,7 @@ bool Init()
// TODO: make configurable (hires, etc)
// set those to 2x the final resolution for antialiased rendering
int screenW = 512;
int screenH = 384;
@ -890,8 +893,8 @@ bool Init()
glVertexAttribIPointer(3, 3, GL_UNSIGNED_INT, 7*4, (void*)(4*4));
glGenFramebuffers(1, &FramebufferID);
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID);
glGenFramebuffers(2, &FramebufferID[0]);
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID[0]);
glGenTextures(1, &FramebufferTex[0]);
glBindTexture(GL_TEXTURE_2D, FramebufferTex[0]);
@ -920,6 +923,18 @@ bool Init()
glTexImage2D(GL_TEXTURE_2D, 0, GL_RG8UI, screenW, screenH, 0, GL_RG_INTEGER, GL_UNSIGNED_BYTE, NULL);
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, FramebufferTex[2], 0);
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID[1]);
glGenTextures(1, &FramebufferTex[3]);
glBindTexture(GL_TEXTURE_2D, FramebufferTex[3]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, screenW/2, screenH/2, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, FramebufferTex[3], 0);
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID[0]);
GLenum fbassign[2] = {GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1};
glDrawBuffers(2, fbassign);
@ -1048,6 +1063,7 @@ void BuildPolygons(RendererPolygon* polygons, int npolys)
// TODO hires-upgraded positions?
//*vptr++ = vtx->FinalPosition[0] | (vtx->FinalPosition[1] << 16);
*vptr++ = (vtx->FinalPosition[0] << 1) | (vtx->FinalPosition[1] << 17);
//*vptr++ = (vtx->FinalPosition[0] << 2) | (vtx->FinalPosition[1] << 18);
*vptr++ = z | (w << 16);
*vptr++ = (vtx->FinalColor[0] >> 1) |
@ -1117,6 +1133,7 @@ void RenderFrame()
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, i*8, 1024, 8, GL_RGBA, GL_UNSIGNED_SHORT_1_5_5_5_REV, vram);
}
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID[0]);
glDisable(GL_BLEND);
glColorMaski(0, GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glColorMaski(1, GL_TRUE, GL_TRUE, GL_FALSE, GL_FALSE);
@ -1361,7 +1378,19 @@ if (PolygonList[firsttrans].PolyData->IsShadow) printf("!! GLORG!!! %08X\n", Pol
}
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID);
if (false)
{
glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferID[0]);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferID[1]);
glBlitFramebuffer(0, 0, 1024, 768, 0, 0, 512, 384, GL_COLOR_BUFFER_BIT, GL_LINEAR);
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID[1]);
}
else
{
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID[0]);
}
glReadBuffer(GL_COLOR_ATTACHMENT0);
//glReadPixels(0, 0, 256, 48, GL_RGBA, GL_UNSIGNED_BYTE, Framebuffer);
glBindBuffer(GL_PIXEL_PACK_BUFFER, PixelbufferID);