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Get the video display closer to working with W7's emulated OpenGL. It can now display video, but there are visible seams between the textures.

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Originally committed to SVN as r3711.
This commit is contained in:
Thomas Goyne 2009-10-13 22:19:31 +00:00
parent 59cf4b656a
commit 9ff8f42d7f
1 changed files with 16 additions and 12 deletions
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28
aegisub/src/video_out_gl.cpp
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@ -116,10 +116,6 @@ void VideoOutGL::InitTextures(int width, int height, GLenum format, int bpp) {
if (width == frameWidth && height == frameHeight && format == frameFormat) return;
wxLogDebug("VideoOutGL::InitTextures: Video size: %dx%d\n", width, height);
frameWidth = width;
frameHeight = height;
frameFormat = format;
// If nessesary, detect what the user's OpenGL supports
if (maxTextureSize == 0) {
// Test for supported internalformats
@ -161,8 +157,8 @@ void VideoOutGL::InitTextures(int width, int height, GLenum format, int bpp) {
int sourceH = maxTextureSize;
// If the last row doesn't need a full texture, shrink it to the smallest one possible
if (i == textureRows - 1 && frameHeight % maxTextureSize > 0) {
sourceH = frameHeight % maxTextureSize;
if (i == textureRows - 1 && height % maxTextureSize > 0) {
sourceH = height % maxTextureSize;
}
for (int j = 0; j < textureCols; j++) {
TextureInfo& ti = textureList[i * textureCols + j];
@ -174,8 +170,8 @@ void VideoOutGL::InitTextures(int width, int height, GLenum format, int bpp) {
ti.sourceW = maxTextureSize;
// If the last column doesn't need a full texture, shrink it to the smallest one possible
if (j == textureCols - 1 && frameWidth % maxTextureSize > 0) {
ti.sourceW = frameWidth % maxTextureSize;
if (j == textureCols - 1 && width % maxTextureSize > 0) {
ti.sourceW = width % maxTextureSize;
}
int w = SmallestPowerOf2(ti.sourceW);
@ -186,11 +182,11 @@ void VideoOutGL::InitTextures(int width, int height, GLenum format, int bpp) {
ti.texH = float(ti.sourceH) / h;
// destW/H is the percent of the output which this texture covers
ti.destW = float(ti.sourceW) / frameWidth;
ti.destH = float(ti.sourceH) / frameHeight;
ti.destW = float(ti.sourceW) / width;
ti.destH = float(ti.sourceH) / height;
ti.textureID = textureIdList[i * textureCols + j];
ti.dataOffset = sourceY * frameWidth * bpp + sourceX * bpp;
ti.dataOffset = sourceY * width * bpp + sourceX * bpp;
// Actually create the texture and set the scaling mode
glBindTexture(GL_TEXTURE_2D, ti.textureID);
@ -202,17 +198,25 @@ void VideoOutGL::InitTextures(int width, int height, GLenum format, int bpp) {
if (GLenum err = glGetError()) throw VideoOutOpenGLException(L"glTexParameteri(GL_TEXTURE_MIN_FILTER)", err);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
if (GLenum err = glGetError()) throw VideoOutOpenGLException(L"glTexParameteri(GL_TEXTURE_MAG_FILTER)", err);
// GL_CLAMP_TO_EDGE was added in OpenGL 1.2, and W7's emulation only supports 1.1
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
if (glGetError()) glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
if (GLenum err = glGetError()) throw VideoOutOpenGLException(L"glTexParameteri(GL_TEXTURE_WRAP_S)", err);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
if (glGetError()) glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
if (GLenum err = glGetError()) throw VideoOutOpenGLException(L"glTexParameteri(GL_TEXTURE_WRAP_T)", err);
destX += ti.destW;
sourceX += ti.sourceW;
}
destY += float(sourceH) / frameHeight;
destY += float(sourceH) / height;
sourceY += sourceH;
}
frameWidth = width;
frameHeight = height;
frameFormat = format;
}
void VideoOutGL::DisplayFrame(AegiVideoFrame frame, int sw, int sh) {