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authorAndrei Karas <akaras@inbox.ru>2012-03-02 21:47:15 +0300
committerAndrei Karas <akaras@inbox.ru>2012-03-02 21:47:15 +0300
commit033baf5710cc021acc93ff7dfce6eff6c2e26cd9 (patch)
tree5881daaa3b5db76a9dc9ad9a64e057e6c3375761 /src/opengl1graphics.cpp
parent6d51edf278effec3145d4036712cda7a2a5b0aef (diff)
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Add FBO for screenshots to safe opengl also.
Diffstat (limited to 'src/opengl1graphics.cpp')
-rw-r--r--src/opengl1graphics.cpp75
1 files changed, 73 insertions, 2 deletions
diff --git a/src/opengl1graphics.cpp b/src/opengl1graphics.cpp
index ea4d5e6f3..0386b4c7d 100644
--- a/src/opengl1graphics.cpp
+++ b/src/opengl1graphics.cpp
@@ -25,6 +25,7 @@
#ifdef USE_OPENGL
#include "opengl1graphics.h"
+#include "configuration.h"
#include "graphicsvertexes.h"
#include "logger.h"
@@ -46,8 +47,8 @@
GLuint OpenGL1Graphics::mLastImage = 0;
OpenGL1Graphics::OpenGL1Graphics():
- mAlpha(false), mTexture(false), mColorAlpha(false),
- mSync(false)
+ mAlpha(false), mTexture(false), mColorAlpha(false), mSync(false),
+ mFboId(0), mTextureId(0), mRboId(0)
{
mOpenGL = 2;
}
@@ -493,6 +494,50 @@ void OpenGL1Graphics::_endDraw()
popClipArea();
}
+void OpenGL1Graphics::prepareScreenshot()
+{
+#if !defined(_WIN32)
+ if (config.getBoolValue("usefbo"))
+ {
+ int h = mTarget->h;
+ int w = mTarget->w;
+
+ // create a texture object
+ glGenTextures(1, &mTextureId);
+ glBindTexture(GL_TEXTURE_2D, mTextureId);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE, 0);
+ glBindTexture(GL_TEXTURE_2D, 0);
+
+ // create a renderbuffer object to store depth info
+ glGenRenderbuffersEXT(1, &mRboId);
+ glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, mRboId);
+ glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT,
+ GL_DEPTH_COMPONENT, w, h);
+ glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
+
+ // create a framebuffer object
+ glGenFramebuffersEXT(1, &mFboId);
+ glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFboId);
+
+ // attach the texture to FBO color attachment point
+ glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+ GL_TEXTURE_2D, mTextureId, 0);
+
+ // attach the renderbuffer to depth attachment point
+ glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
+ GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, mRboId);
+
+ glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFboId);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ }
+#endif
+}
+
SDL_Surface* OpenGL1Graphics::getScreenshot()
{
int h = mTarget->h;
@@ -504,6 +549,9 @@ SDL_Surface* OpenGL1Graphics::getScreenshot()
w, h, 24,
0xff0000, 0x00ff00, 0x0000ff, 0x000000);
+ if (!screenshot)
+ return nullptr;
+
if (SDL_MUSTLOCK(screenshot))
SDL_LockSurface(screenshot);
@@ -530,6 +578,29 @@ SDL_Surface* OpenGL1Graphics::getScreenshot()
free(buf);
+#if !defined(_WIN32)
+ if (config.getBoolValue("usefbo"))
+ {
+ glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+ if (mFboId)
+ {
+ glDeleteFramebuffersEXT(1, &mFboId);
+ mFboId = 0;
+ }
+ glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
+ if (mRboId)
+ {
+ glDeleteRenderbuffersEXT(1, &mRboId);
+ mRboId = 0;
+ }
+ if (mTextureId)
+ {
+ glDeleteTextures(1, &mTextureId);
+ mTextureId = 0;
+ }
+ }
+#endif
+
glPixelStorei(GL_PACK_ALIGNMENT, pack);
if (SDL_MUSTLOCK(screenshot))