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betterer transparency support

This commit is contained in:
Arisotura 2019-05-02 13:44:54 +02:00
parent 1e29e1242d
commit 3d77087320
1 changed files with 167 additions and 40 deletions
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207
src/GPU3D_OpenGL43.cpp
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@ -71,9 +71,17 @@ PFNGLUNIFORM4UIPROC glUniform4ui;
PFNGLACTIVETEXTUREPROC glActiveTexture;
PFNGLBINDIMAGETEXTUREPROC glBindImageTexture;
PFNGLDRAWBUFFERSPROC glDrawBuffers;
PFNGLBLENDFUNCSEPARATEIPROC glBlendFuncSeparatei;
PFNGLBLENDEQUATIONSEPARATEIPROC glBlendEquationSeparatei;
PFNGLGETSTRINGIPROC glGetStringi;
// GL version requirements
// * explicit uniform location: 4.3 (or extension)
#define kShaderHeader "#version 430"
@ -93,12 +101,17 @@ void main()
const char* kClearFS = kShaderHeader R"(
layout(location=0) uniform uvec4 uColor;
layout(location=2) uniform uint uOpaquePolyID;
layout(location=3) uniform uint uFogFlag;
out vec4 oColor;
layout(location=0) out vec4 oColor;
layout(location=1) out uvec2 oAttr;
void main()
{
oColor = vec4(uColor).bgra / 31.0;
oAttr.r = uOpaquePolyID;
oAttr.g = uFogFlag;
}
)";
@ -124,7 +137,8 @@ smooth in vec4 fColor;
smooth in vec2 fTexcoord;
flat in uvec3 fPolygonAttr;
out vec4 oColor;
layout(location=0) out vec4 oColor;
layout(location=1) out uvec2 oAttr;
vec4 TextureLookup()
{
@ -446,11 +460,31 @@ void main()
}
)";
const char* kRenderFS_ZS = R"(
void main()
{
oColor = vec4(0,0,0,1);
}
)";
const char* kRenderFS_WS = R"(
smooth in float fZ;
void main()
{
oColor = vec4(0,0,0,1);
gl_FragDepth = fZ;
}
)";
enum
{
RenderFlag_WBuffer = 0x01,
RenderFlag_Trans = 0x02,
RenderFlag_WBuffer = 0x01,
RenderFlag_Trans = 0x02,
RenderFlag_ShadowMask = 0x04,
};
@ -547,6 +581,11 @@ bool InitGLExtensions()
LOADPROC(GLACTIVETEXTURE, glActiveTexture);
LOADPROC(GLBINDIMAGETEXTURE, glBindImageTexture);
LOADPROC(GLDRAWBUFFERS, glDrawBuffers);
LOADPROC(GLBLENDFUNCSEPARATEI, glBlendFuncSeparatei);
LOADPROC(GLBLENDEQUATIONSEPARATEI, glBlendEquationSeparatei);
LOADPROC(GLGETSTRINGI, glGetStringi);
#undef LOADPROC
@ -692,9 +731,6 @@ bool Init()
glEnable(GL_DEPTH_TEST);
glEnable(GL_STENCIL_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// TODO: make configurable (hires, etc)
glViewport(0, 0, 256, 192);
@ -713,6 +749,10 @@ bool Init()
kRenderVS_Z, kRenderFS_ZT)) return false;
if (!BuildRenderShader(RenderFlag_Trans | RenderFlag_WBuffer,
kRenderVS_W, kRenderFS_WT)) return false;
if (!BuildRenderShader(RenderFlag_ShadowMask,
kRenderVS_Z, kRenderFS_ZS)) return false;
if (!BuildRenderShader(RenderFlag_ShadowMask | RenderFlag_WBuffer,
kRenderVS_W, kRenderFS_WS)) return false;
float clearvtx[6*2] =
@ -788,8 +828,25 @@ bool Init()
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_DEPTH24_STENCIL8, 256, 192, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, NULL); printf("%04X\n", glGetError());
glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, FramebufferTex[1], 0);printf("%04X\n", glGetError());
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, 256, 192, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, NULL);
glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, FramebufferTex[1], 0);
glGenTextures(1, &FramebufferTex[2]);
glBindTexture(GL_TEXTURE_2D, FramebufferTex[2]);
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_RG8UI, 256, 192, 0, GL_RG_INTEGER, GL_UNSIGNED_BYTE, NULL);
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, FramebufferTex[2], 0);
GLenum fbassign[2] = {GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1};
glDrawBuffers(2, fbassign);
glEnable(GL_BLEND);
glBlendFuncSeparatei(0, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE);
glBlendEquationSeparatei(0, GL_ADD, GL_MAX);
glBlendFuncSeparatei(1, GL_ONE, GL_ZERO, GL_ONE, GL_ZERO);
glGenBuffers(1, &PixelbufferID);
glBindBuffer(GL_PIXEL_PACK_BUFFER, PixelbufferID);
@ -985,19 +1042,13 @@ void RenderFrame()
u32 r = RenderClearAttr1 & 0x1F;
u32 g = (RenderClearAttr1 >> 5) & 0x1F;
u32 b = (RenderClearAttr1 >> 10) & 0x1F;
u32 fog = (RenderClearAttr1 >> 15) & 0x1;
u32 a = (RenderClearAttr1 >> 16) & 0x1F;
u32 polyid = (RenderClearAttr1 >> 24) & 0x3F;
u32 z = ((RenderClearAttr2 & 0x7FFF) * 0x200) + 0x1FF;
if (a == 0)
{
glStencilFunc(GL_ALWAYS, 0x80, 0xFF);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
}
else
{
glStencilFunc(GL_ALWAYS, 0, 0xFF);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
}
glStencilFunc(GL_ALWAYS, 0, 0xFF);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
/*if (r) r = r*2 + 1;
if (g) g = g*2 + 1;
@ -1005,6 +1056,8 @@ void RenderFrame()
glUniform4ui(0, r, g, b, a);
glUniform1ui(1, z);
glUniform1ui(2, polyid);
glUniform1ui(3, fog);
glBindBuffer(GL_ARRAY_BUFFER, ClearVertexBufferID);
glBindVertexArray(ClearVertexArrayID);
@ -1041,34 +1094,79 @@ void RenderFrame()
// zorp
glDepthFunc(GL_LESS);
glStencilFunc(GL_ALWAYS, 0, 0xFF);
glStencilOp(GL_KEEP, GL_KEEP, GL_ZERO);
glStencilFunc(GL_ALWAYS, 0xFF, 0xFF);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
glBindVertexArray(VertexArrayID);
glDrawElements(GL_TRIANGLES, NumTriangles*3, GL_UNSIGNED_SHORT, IndexBuffer);
// pass 2: if needed, render translucent pixels that are against background pixels
glEnable(GL_BLEND);
UseRenderShader(flags | RenderFlag_Trans);
u16* iptr;
u32 curkey;
/*if ((RenderClearAttr1 & 0x001F0000) == 0)
{
glStencilFunc(GL_EQUAL, 0x80, 0x80);
glStencilOp(GL_KEEP, GL_KEEP, GL_ZERO);
//
}*/
// pass 3: translucent pixels
bool lastwasshadow;
if (firsttrans > -1)
{
// pass 2: if needed, render translucent pixels that are against background pixels
// when background alpha is zero, those need to be rendered with blending disabled
if ((RenderClearAttr1 & 0x001F0000) == 0)
{
iptr = PolygonList[firsttrans].Indices;
curkey = 0xFFFFFFFF;
glDisable(GL_BLEND);
for (int i = firsttrans; i < npolys; i++)
{
RendererPolygon* rp = &PolygonList[i];
if (rp->RenderKey != curkey)
{
u16* endptr = rp->Indices;
u32 num = (u32)(endptr - iptr);
if (num) glDrawElements(GL_TRIANGLES, num, GL_UNSIGNED_SHORT, iptr);
iptr = rp->Indices;
curkey = rp->RenderKey;
// configure new one
// shadows aren't likely to pass against the clear-plane, so
if (rp->PolyData->IsShadow) continue;
// zorp
glDepthFunc(GL_LESS);
u32 polyattr = rp->PolyData->Attr;
u32 polyid = (polyattr >> 24) & 0x3F;
glStencilFunc(GL_EQUAL, 0, 0xFF);
glStencilOp(GL_KEEP, GL_KEEP, GL_INVERT);
glStencilMask(0x40|polyid); // heheh
if (polyattr & (1<<11)) glDepthMask(GL_TRUE);
else glDepthMask(GL_FALSE);
}
}
{
u16* endptr = &IndexBuffer[NumTriangles*3];
u32 num = (u32)(endptr - iptr);
if (num) glDrawElements(GL_TRIANGLES, num, GL_UNSIGNED_SHORT, iptr);
}
glEnable(GL_BLEND);
glStencilMask(0xFF);
}
// pass 3: translucent pixels
iptr = PolygonList[firsttrans].Indices;
curkey = 0xFFFFFFFF;
lastwasshadow = false;
for (int i = firsttrans; i < npolys; i++)
{
@ -1084,17 +1182,46 @@ void RenderFrame()
// configure new one
// zorp
glDepthFunc(GL_LESS);
if (rp->PolyData->IsShadowMask)
{
if (!lastwasshadow)
{
glDisable(GL_BLEND);
UseRenderShader(flags | RenderFlag_ShadowMask);
u32 polyattr = rp->PolyData->Attr;
u32 polyid = (polyattr >> 24) & 0x3F;
//glStencilFunc(GL_ALWAYS, 0x80, 0x80);
//glStencilOp(GL_REPLACE, GL_REPLACE, GL_KEEP);
glStencilFunc(GL_NOTEQUAL, 0x40|polyid, 0x7F);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glDepthMask(GL_FALSE);
if (polyattr & (1<<11)) glDepthMask(GL_TRUE);
else glDepthMask(GL_FALSE);
lastwasshadow = true;
}
}
else
{
if (lastwasshadow)
{
glEnable(GL_BLEND);
UseRenderShader(flags | RenderFlag_Trans);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
lastwasshadow = false;
}
// zorp
glDepthFunc(GL_LESS);
u32 polyattr = rp->PolyData->Attr;
u32 polyid = (polyattr >> 24) & 0x3F;
glStencilFunc(GL_NOTEQUAL, 0x40|polyid, 0xFF);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
if (polyattr & (1<<11)) glDepthMask(GL_TRUE);
else glDepthMask(GL_FALSE);
}
}
}