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fasterer framebuffer read

This commit is contained in:
Arisotura 2019-04-01 04:20:43 +02:00
parent f8751bd1fb
commit 8bc4ca3fc8
1 changed files with 67 additions and 11 deletions
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78
src/GPU3D_OpenGL43.cpp
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@ -30,12 +30,21 @@ namespace GPU3D
namespace GLRenderer43
{
PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers;
PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer;
PFNGLFRAMEBUFFERTEXTUREPROC glFramebufferTexture;
PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers;
PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers;
PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer;
PFNGLFRAMEBUFFERTEXTUREPROC glFramebufferTexture;
PFNGLGENBUFFERSPROC glGenBuffers;
PFNGLDELETEBUFFERSPROC glDeleteBuffers;
PFNGLBINDBUFFERPROC glBindBuffer;
PFNGLMAPBUFFERPROC glMapBuffer;
PFNGLMAPBUFFERRANGEPROC glMapBufferRange;
PFNGLUNMAPBUFFERPROC glUnmapBuffer;
PFNGLBUFFERDATAPROC glBufferData;
GLuint FramebufferID;
GLuint FramebufferID, PixelbufferID;
u8 Framebuffer[256*192*4];
u8 CurLine[256*4];
@ -47,9 +56,18 @@ bool InitGLExtensions()
if (!name) return false;
LOADPROC(GLGENFRAMEBUFFERS, glGenFramebuffers);
LOADPROC(GLDELETEFRAMEBUFFERS, glDeleteFramebuffers);
LOADPROC(GLBINDFRAMEBUFFER, glBindFramebuffer);
LOADPROC(GLFRAMEBUFFERTEXTURE, glFramebufferTexture);
LOADPROC(GLGENBUFFERS, glGenBuffers);
LOADPROC(GLDELETEBUFFERS, glDeleteBuffers);
LOADPROC(GLBINDBUFFER, glBindBuffer);
LOADPROC(GLMAPBUFFER, glMapBuffer);
LOADPROC(GLMAPBUFFERRANGE, glMapBufferRange);
LOADPROC(GLUNMAPBUFFER, glUnmapBuffer);
LOADPROC(GLBUFFERDATA, glBufferData);
#undef LOADPROC
return true;
}
@ -66,16 +84,16 @@ bool Init()
{
if ((x & 0x10) ^ (y & 0x10))
{
*ptr++ = 0x00;
*ptr++ = 0x00;
*ptr++ = 0x3F;
*ptr++ = 0x00;
*ptr++ = 0;
*ptr++ = 0x1F;
}
else
{
*ptr++ = 0;
*ptr++ = y>>2;
*ptr++ = 0x3F;
*ptr++ = y>>2;
*ptr++ = 0;
*ptr++ = 0x1F;
}
}
@ -94,6 +112,10 @@ bool Init()
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 192, 0, GL_RGBA, GL_UNSIGNED_BYTE, test_tex);
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, frametex, 0);
glGenBuffers(1, &PixelbufferID);
glBindBuffer(GL_PIXEL_PACK_BUFFER, PixelbufferID);
glBufferData(GL_PIXEL_PACK_BUFFER, 256*48*4, NULL, GL_DYNAMIC_READ);
return true;
}
@ -114,7 +136,13 @@ void VCount144()
void RenderFrame()
{
//
// render shit here
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID);
glReadBuffer(GL_COLOR_ATTACHMENT0);
//glReadPixels(0, 0, 256, 48, GL_RGBA, GL_UNSIGNED_BYTE, Framebuffer);
glBindBuffer(GL_PIXEL_PACK_BUFFER, PixelbufferID);
glReadPixels(0, 0, 256, 48, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
}
void RequestLine(int line)
@ -126,9 +154,37 @@ u32* GetLine(int line)
{
if (line == 0)
{
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID);
/*glBindFramebuffer(GL_FRAMEBUFFER, FramebufferID);
glReadBuffer(GL_COLOR_ATTACHMENT0);
glReadPixels(0, 0, 256, 192, GL_RGBA, GL_UNSIGNED_BYTE, Framebuffer);
glReadPixels(0, 0, 256, 192, GL_RGBA, GL_UNSIGNED_BYTE, Framebuffer);*/
u8* data = (u8*)glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
if (data) memcpy(&Framebuffer[4*256*0], data, 4*256*48);
glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
glReadPixels(0, 48, 256, 48, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
}
else if (line == 48)
{
u8* data = (u8*)glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
if (data) memcpy(&Framebuffer[4*256*48], data, 4*256*48);
glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
glReadPixels(0, 96, 256, 48, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
}
else if (line == 96)
{
u8* data = (u8*)glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
if (data) memcpy(&Framebuffer[4*256*96], data, 4*256*48);
glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
glReadPixels(0, 144, 256, 48, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
}
else if (line == 144)
{
u8* data = (u8*)glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
if (data) memcpy(&Framebuffer[4*256*144], data, 4*256*48);
glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
}
return (u32*)&Framebuffer[256*4 * line];