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Fix #37002: cycles viewport render shows white on old graphics cards with no

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support for non-power-of-two textures.
This commit is contained in:
Brecht Van Lommel 2013-10-12 13:55:52 +00:00
parent 1a3011ac83
commit 9d7567d6ac
1 changed files with 45 additions and 30 deletions
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75
intern/cycles/device/device.cpp
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@ -56,18 +56,6 @@ void Device::draw_pixels(device_memory& rgba, int y, int w, int h, int dy, int w
{
pixels_copy_from(rgba, y, w, h);
GLuint texid;
glGenTextures(1, &texid);
glBindTexture(GL_TEXTURE_2D, texid);
if(rgba.data_type == TYPE_HALF)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, w, h, 0, GL_RGBA, GL_HALF_FLOAT, (void*)rgba.data_pointer);
else
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, (void*)rgba.data_pointer);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glEnable(GL_TEXTURE_2D);
if(transparent) {
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
@ -75,30 +63,57 @@ void Device::draw_pixels(device_memory& rgba, int y, int w, int h, int dy, int w
glColor3f(1.0f, 1.0f, 1.0f);
glPushMatrix();
glTranslatef(0.0f, (float)dy, 0.0f);
if(rgba.data_type == TYPE_HALF) {
/* draw half float texture, GLSL shader for display transform assumed to be bound */
GLuint texid;
glGenTextures(1, &texid);
glBindTexture(GL_TEXTURE_2D, texid);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, w, h, 0, GL_RGBA, GL_HALF_FLOAT, (void*)rgba.data_pointer);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex2f(0.0f, 0.0f);
glTexCoord2f(1.0f, 0.0f);
glVertex2f((float)width, 0.0f);
glTexCoord2f(1.0f, 1.0f);
glVertex2f((float)width, (float)height);
glTexCoord2f(0.0f, 1.0f);
glVertex2f(0.0f, (float)height);
glEnable(GL_TEXTURE_2D);
glEnd();
glPushMatrix();
glTranslatef(0.0f, (float)dy, 0.0f);
glPopMatrix();
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex2f(0.0f, 0.0f);
glTexCoord2f(1.0f, 0.0f);
glVertex2f((float)width, 0.0f);
glTexCoord2f(1.0f, 1.0f);
glVertex2f((float)width, (float)height);
glTexCoord2f(0.0f, 1.0f);
glVertex2f(0.0f, (float)height);
glEnd();
glPopMatrix();
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_2D);
glDeleteTextures(1, &texid);
}
else {
/* fallback for old graphics cards that don't support GLSL, half float,
* and non-power-of-two textures */
glPixelZoom((float)width/(float)w, (float)height/(float)h);
glRasterPos2f(0, dy);
uint8_t *pixels = (uint8_t*)rgba.data_pointer;
pixels += 4*y*w;
glDrawPixels(w, h, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
glRasterPos2f(0.0f, 0.0f);
glPixelZoom(1.0f, 1.0f);
}
if(transparent)
glDisable(GL_BLEND);
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_2D);
glDeleteTextures(1, &texid);
}
Device *Device::create(DeviceInfo& info, Stats &stats, bool background)