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fix render-to-texture issue

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This commit is contained in:
David Rose 2009-02-13 14:38:55 +00:00
parent 5545aa6ce7
commit a019d736ec
4 changed files with 41 additions and 11 deletions
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3
panda/src/display/graphicsOutput.cxx
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@ -591,8 +591,7 @@ get_active_display_region(int n) const {
// Description: Generates a GeomVertexData for a texture card.
////////////////////////////////////////////////////////////////////
PT(GeomVertexData) GraphicsOutput::
create_texture_card_vdata(int x, int y)
{
create_texture_card_vdata(int x, int y) {
float xhi = 1.0;
float yhi = 1.0;

14
panda/src/display/parasiteBuffer.cxx
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@ -92,12 +92,14 @@ set_size(int x, int y) {
////////////////////////////////////////////////////////////////////
void ParasiteBuffer::
set_size_and_recalc(int x, int y) {
if (_creation_flags & GraphicsPipe::BF_size_power_2) {
x = Texture::down_to_power_2(x);
y = Texture::down_to_power_2(y);
}
if (_creation_flags & GraphicsPipe::BF_size_square) {
x = y = min(x, y);
if (!(_creation_flags & GraphicsPipe::BF_size_track_host)) {
if (_creation_flags & GraphicsPipe::BF_size_power_2) {
x = Texture::down_to_power_2(x);
y = Texture::down_to_power_2(y);
}
if (_creation_flags & GraphicsPipe::BF_size_square) {
x = y = min(x, y);
}
}
GraphicsOutput::set_size_and_recalc(x, y);

30
panda/src/glstuff/glGraphicsStateGuardian_src.cxx
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@ -3442,6 +3442,8 @@ framebuffer_copy_to_texture(Texture *tex, int z, const DisplayRegion *dr,
GLenum target = get_texture_target(tex->get_texture_type());
GLint internal_format = get_internal_image_format(tex);
int width = tex->get_x_size();
int height = tex->get_y_size();
bool uses_mipmaps = tex->uses_mipmaps() && !CLP(ignore_mipmaps);
if (uses_mipmaps) {
@ -3455,8 +3457,13 @@ framebuffer_copy_to_texture(Texture *tex, int z, const DisplayRegion *dr,
}
bool new_image = needs_reload || gtc->was_image_modified();
if (internal_format != gtc->_internal_format) {
// If the internal format has changed, we need to reload the
if (!gtc->_already_applied ||
internal_format != gtc->_internal_format ||
uses_mipmaps != gtc->_uses_mipmaps ||
width != gtc->_width ||
height != gtc->_height ||
1 != gtc->_depth) {
// If the texture properties have changed, we need to reload the
// image.
new_image = true;
}
@ -3471,12 +3478,29 @@ framebuffer_copy_to_texture(Texture *tex, int z, const DisplayRegion *dr,
if (new_image) {
// We have to create a new image.
GLP(CopyTexImage2D)(target, 0, internal_format, xo, yo, w, h, 0);
if (w != width || h != height) {
// This means a two-step process, to create a texture of the
// appropriate size.
GLP(TexImage2D)(target, 0, internal_format, width, height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
GLP(CopyTexSubImage2D)(target, 0, 0, 0, xo, yo, w, h);
} else {
// One-step process.
GLP(CopyTexImage2D)(target, 0, internal_format, xo, yo, w, h, 0);
}
} else {
// We can overlay the existing image.
GLP(CopyTexSubImage2D)(target, 0, 0, 0, xo, yo, w, h);
}
gtc->_already_applied = true;
gtc->_uses_mipmaps = uses_mipmaps;
gtc->_internal_format = internal_format;
gtc->_width = width;
gtc->_height = height;
gtc->_depth = 1;
gtc->mark_loaded();
gtc->enqueue_lru(&_prepared_objects->_graphics_memory_lru);

5
panda/src/glstuff/glTextureContext_src.I
View File

@ -24,4 +24,9 @@ CLP(TextureContext)(PreparedGraphicsObjects *pgo, Texture *tex) :
{
_index = 0;
_already_applied = false;
_uses_mipmaps = false;
_internal_format = 0;
_width = 0;
_height = 0;
_depth = 0;
}