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added option to use XFB in GL, but XFB support still needs work. modified viewport to include scissor offset.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@879 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
donkopunchstania
2008-10-15 14:07:03 +00:00
parent 70eebcb3a3
commit bbbe898839
17 changed files with 416 additions and 100 deletions
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119
Source/Plugins/Plugin_VideoOGL/Src/XFB.cpp
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@ -19,8 +19,10 @@
// Preliminary non-working code.
#include "Globals.h"
#include "GLInit.h"
#include "Render.h"
#include "TextureMngr.h"
#include "VertexShaderManager.h"
#include "XFBConvert.h"
enum {
@ -29,39 +31,138 @@ enum {
};
static GLuint xfb_texture;
static u8 *xfb_buffer;
static u8 *xfb_buffer = 0;
static u8 *efb_buffer = 0;
static GLuint s_xfbFrameBuffer = 0;
static GLuint s_xfbRenderBuffer = 0;
void XFB_Init()
{
// used to render XFB
xfb_buffer = new u8[XFB_WIDTH * XFB_HEIGHT * 4];
memset(xfb_buffer, 0, XFB_WIDTH * XFB_HEIGHT * 4);
glGenTextures(1, &xfb_texture);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, xfb_texture);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, XFB_WIDTH, XFB_HEIGHT, 0, GL_BGRA, GL_UNSIGNED_BYTE, xfb_buffer);
// used to render EFB
glGenFramebuffersEXT( 1, &s_xfbFrameBuffer);
glGenRenderbuffersEXT(1, &s_xfbRenderBuffer);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, s_xfbRenderBuffer);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA, nBackbufferWidth, nBackbufferHeight);
efb_buffer = new u8[nBackbufferWidth * nBackbufferHeight * 4];
}
void XFB_Draw(u8 *xfb_in_ram)
void XFB_Write(u8 *xfb_in_ram, const TRectangle& sourceRc, u32 dstWd, u32 dstHt, float yScale)
{
Renderer::SetRenderMode(Renderer::RM_Normal);
Renderer::ResetGLState();
ConvertXFB((u32 *)xfb_buffer, xfb_in_ram, XFB_WIDTH, XFB_HEIGHT);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, xfb_texture);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, XFB_WIDTH, XFB_HEIGHT, 0, GL_BGRA, GL_UNSIGNED_BYTE, xfb_buffer);
// switch to XFB frame buffer
Renderer::SetFramebuffer(s_xfbFrameBuffer);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, s_xfbRenderBuffer);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, s_xfbRenderBuffer);
GL_REPORT_ERRORD();
glViewport(nXoff, nYoff, nBackbufferWidth, nBackbufferHeight);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, Renderer::GetRenderTarget());
TextureMngr::EnableTexRECT(0);
for (int i = 1; i < 8; ++i)
TextureMngr::DisableStage(i);
GL_REPORT_ERRORD();
float scaledTextureY = nBackbufferHeight - (nBackbufferHeight / yScale);
glBegin(GL_QUADS);
glTexCoord2f(nBackbufferWidth, nBackbufferHeight); glVertex2f(-1,-1);
glTexCoord2f(nBackbufferWidth, scaledTextureY); glVertex2f(-1,1);
glTexCoord2f(0, scaledTextureY); glVertex2f(1,1);
glTexCoord2f(0, nBackbufferHeight); glVertex2f(1,-1);
glEnd();
GL_REPORT_ERRORD();
int width = sourceRc.right - sourceRc.left;
int height = sourceRc.bottom - sourceRc.top;
glReadPixels(sourceRc.left, sourceRc.top, width, height, GL_RGBA, GL_UNSIGNED_BYTE, efb_buffer);
GL_REPORT_ERRORD();
Renderer::SetFramebuffer(0);
Renderer::RestoreGLState();
VertexShaderMngr::SetViewportChanged();
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
TextureMngr::DisableStage(0);
Renderer::RestoreGLState();
GL_REPORT_ERRORD();
// TODO - verify that XFB pixel order. probably reverse of GL pixel order
// TODO - use shader for conversion
ConvertToXFB((u32 *)xfb_in_ram, efb_buffer, dstWd, dstHt);
// old way
/*glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, Renderer::GetRenderTarget());
TextureMngr::EnableTexRECT(0);
glGetTexImage(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, GL_UNSIGNED_BYTE, efb_buffer);
static u8 *efbEndAddress = efb_buffer + ((nBackbufferWidth * nBackbufferHeight) - 1) * 4;
ConvertToXFBReverse((u32 *)xfb_in_ram, efbEndAddress, dstWd, dstHt);*/
}
void XFB_Draw(u8 *xfb_in_ram, u32 width, u32 height, s32 yOffset)
{
if(width == 0 || height == 0)
return;
OpenGL_Update(); // just updates the render window position and the backbuffer size
Renderer::SetRenderMode(Renderer::RM_Normal);
// render to the real buffer now
glBindFramebufferEXT( GL_FRAMEBUFFER_EXT, 0 ); // switch to the backbuffer
glViewport(nXoff, nYoff, nBackbufferWidth, nBackbufferHeight);
Renderer::ResetGLState();
// TODO - use shader for conversion
ConvertFromXFB((u32 *)xfb_buffer, xfb_in_ram, width, height);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, xfb_texture);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, xfb_buffer);
TextureMngr::EnableTexRECT(0);
for (int i = 1; i < 8; ++i)
TextureMngr::DisableStage(i);
GL_REPORT_ERRORD();
glBegin(GL_QUADS);
glTexCoord2f(0, 0); glVertex2f(-1,-1);
glTexCoord2f(0, XFB_WIDTH); glVertex2f(-1,1);
glTexCoord2f(XFB_WIDTH, XFB_HEIGHT); glVertex2f(1,1);
glTexCoord2f(XFB_WIDTH, 0); glVertex2f(1,-1);
glTexCoord2f(width, height + yOffset); glVertex2f(-1,-1);
glTexCoord2f(width, 0 + yOffset); glVertex2f(-1,1);
glTexCoord2f(0, 0 + yOffset); glVertex2f(1,1);
glTexCoord2f(0, height + yOffset); glVertex2f(1,-1);
glEnd();
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
TextureMngr::DisableStage(0);
Renderer::SwapBuffers();
Renderer::RestoreGLState();
GL_REPORT_ERRORD();
}
void XFB_Shutdown()
{
glDeleteFramebuffersEXT(1, &s_xfbFrameBuffer);
glDeleteTextures(1, &xfb_texture);
xfb_texture = 0;
delete [] xfb_buffer;