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finally get wbuffering covered.

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This commit is contained in:
Arisotura 2019-04-25 13:32:15 +02:00
parent 448806fada
commit 6febd79f83
1 changed files with 133 additions and 20 deletions
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153
src/GPU3D_OpenGL43.cpp
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@ -70,7 +70,24 @@ PFNGLBINDIMAGETEXTUREPROC glBindImageTexture;
PFNGLGETSTRINGIPROC glGetStringi;
const char* kRenderVS = R"(#version 420
const char* kShaderHeader = "#version 420";
const char* kRenderVSCommon = R"(
// common shit goes here
)";
const char* kRenderFSCommon = R"(
vec4 FinalColor(vec4 col)
{
return col.bgra * vec4(63.0/255.0, 63.0/255.0, 63.0/255.0, 31.0/255.0);
}
)";
const char* kRenderVS_Z = R"(
layout(location=0) in uvec4 vPosition;
layout(location=1) in uvec4 vColor;
@ -88,7 +105,7 @@ void main()
fpos.x = ((float(vPosition.x) * 2.0) / 256.0) - 1.0;
fpos.y = ((float(vPosition.y) * 2.0) / 192.0) - 1.0;
fpos.z = float(vPosition.z << zshift) / 16777216.0;
fpos.w = float(vPosition.w) / 65535.0f;
fpos.w = float(vPosition.w) / 65536.0f;
fpos.xyz *= fpos.w;
fColor = vec4(vColor) / vec4(255.0,255.0,255.0,31.0);
@ -97,7 +114,36 @@ void main()
}
)";
const char* kRenderFS = R"(#version 420
const char* kRenderVS_W = R"(
layout(location=0) in uvec4 vPosition;
layout(location=1) in uvec4 vColor;
layout(location=2) in uvec2 vTexcoord;
layout(location=3) in uvec3 vPolygonAttr;
smooth out float fZ;
smooth out vec4 fColor;
void main()
{
uint attr = vPolygonAttr.x;
uint zshift = (attr >> 16) & 0x1F;
vec4 fpos;
fpos.x = ((float(vPosition.x) * 2.0) / 256.0) - 1.0;
fpos.y = ((float(vPosition.y) * 2.0) / 192.0) - 1.0;
fZ = float(vPosition.z << zshift) / 16777216.0;
fpos.w = float(vPosition.w) / 65536.0f;
fpos.xy *= fpos.w;
fColor = vec4(vColor) / vec4(255.0,255.0,255.0,31.0);
gl_Position = fpos;
}
)";
const char* kRenderFS_Z = R"(
smooth in vec4 fColor;
@ -110,12 +156,38 @@ void main()
finalcolor.rgb = fColor.rgb;
finalcolor.a = 1.0;
oColor = finalcolor.bgra * vec4(63.0/255.0, 63.0/255.0, 63.0/255.0, 31.0/255.0);
oColor = FinalColor(finalcolor);
}
)";
const char* kRenderFS_W = R"(
smooth in float fZ;
smooth in vec4 fColor;
out vec4 oColor;
void main()
{
vec4 finalcolor;
finalcolor.rgb = fColor.rgb;
finalcolor.a = 1.0;
oColor = FinalColor(finalcolor);
gl_FragDepth = fZ;
}
)";
GLuint RenderShader[3];
enum
{
RenderFlag_WBuffer = 0x01,
};
GLuint RenderShader[16][3];
// vertex buffer
// * XYZW: 4x16bit
@ -127,7 +199,7 @@ GLuint RenderShader[3];
// * bit4-7, 11, 14-15, 24-29: POLYGON_ATTR
// * bit16-20: Z shift
// * bit8: front-facing (?)
// * bit9: W-buffering
// * bit9: W-buffering (?)
GLuint VertexBufferID;
u32 VertexBuffer[10240 * 7];
@ -265,6 +337,40 @@ bool BuildShaderProgram(const char* vs, const char* fs, GLuint* ids, const char*
return true;
}
bool BuildRenderShader(u32 flags, const char* vs, const char* fs)
{
char shadername[32];
sprintf(shadername, "RenderShader%02X", flags);
int headerlen = strlen(kShaderHeader);
int vslen = strlen(vs);
int vsclen = strlen(kRenderVSCommon);
char* vsbuf = new char[headerlen + vsclen + vslen + 1];
strcpy(&vsbuf[0], kShaderHeader);
strcpy(&vsbuf[headerlen], kRenderVSCommon);
strcpy(&vsbuf[headerlen + vsclen], vs);
int fslen = strlen(fs);
int fsclen = strlen(kRenderFSCommon);
char* fsbuf = new char[headerlen + fsclen + fslen + 1];
strcpy(&fsbuf[0], kShaderHeader);
strcpy(&fsbuf[headerlen], kRenderFSCommon);
strcpy(&fsbuf[headerlen + fsclen], fs);
bool ret = BuildShaderProgram(vsbuf, fsbuf, RenderShader[flags], shadername);
delete[] vsbuf;
delete[] fsbuf;
return ret;
}
void UseRenderShader(u32 flags)
{
glUseProgram(RenderShader[flags][2]);
}
bool Init()
{
if (!InitGLExtensions()) return false;
@ -298,8 +404,10 @@ bool Init()
glClearDepth(1.0);
if (!BuildShaderProgram(kRenderVS, kRenderFS, RenderShader, "RenderShader"))
return false;
//if (!BuildShaderProgram(kRenderVS, kRenderFS, RenderShader, "RenderShader"))
// return false;
if (!BuildRenderShader(0, kRenderVS_Z, kRenderFS_Z)) return false;
if (!BuildRenderShader(RenderFlag_WBuffer, kRenderVS_W, kRenderFS_W)) return false;
glGenBuffers(1, &VertexBufferID);
@ -456,22 +564,27 @@ void RenderFrame()
delete[] dorp;
}
// render shit here
glUseProgram(RenderShader[2]);
if (RenderNumPolygons)
{
// render shit here
u32 flags = 0;
if (RenderPolygonRAM[0]->WBuffer) flags |= RenderFlag_WBuffer;
UseRenderShader(flags);
glBindTexture(GL_TEXTURE_2D, AuxBufferID);
glBindImageTexture(0, AuxBufferID, 0, GL_FALSE, 0, GL_READ_WRITE, GL_RG32UI);
glBindTexture(GL_TEXTURE_2D, AuxBufferID);
glBindImageTexture(0, AuxBufferID, 0, GL_FALSE, 0, GL_READ_WRITE, GL_RG32UI);
// zorp
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
// zorp
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
BuildPolygons(&RenderPolygonRAM[0], RenderNumPolygons);
glBindBuffer(GL_ARRAY_BUFFER, VertexBufferID);
glBufferSubData(GL_ARRAY_BUFFER, 0, NumVertices*7*4, VertexBuffer);
BuildPolygons(&RenderPolygonRAM[0], RenderNumPolygons);
glBindBuffer(GL_ARRAY_BUFFER, VertexBufferID);
glBufferSubData(GL_ARRAY_BUFFER, 0, NumVertices*7*4, VertexBuffer);
glBindVertexArray(VertexArrayID);
glDrawElements(GL_TRIANGLES, NumTriangles*3, GL_UNSIGNED_SHORT, IndexBuffer);
glBindVertexArray(VertexArrayID);
glDrawElements(GL_TRIANGLES, NumTriangles*3, GL_UNSIGNED_SHORT, IndexBuffer);
}
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID);