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auto-downscale parasite buffers

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This commit is contained in:
David Rose 2008-08-08 20:54:45 +00:00
parent 251416cd5c
commit ba38195f19
5 changed files with 36 additions and 12 deletions
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9
panda/src/display/graphicsEngine.cxx
View File

@ -408,15 +408,6 @@ make_output(GraphicsPipe *pipe,
// last hope.
if (can_use_parasite) {
if (x_size > host->get_x_size()) {
x_size = Texture::down_to_power_2(host->get_x_size());
}
if (y_size > host->get_y_size()) {
y_size = Texture::down_to_power_2(host->get_y_size());
}
if (flags & GraphicsPipe::BF_size_square) {
x_size = y_size = min(x_size, y_size);
}
ParasiteBuffer *buffer = new ParasiteBuffer(host, name, x_size, y_size, flags);
buffer->_sort = sort;
do_add_window(buffer, threading_model);

11
panda/src/display/graphicsOutput.cxx
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@ -732,13 +732,20 @@ make_texture_buffer(const string &name, int x_size, int y_size,
FrameBufferProperties props;
props.set_rgb_color(1);
props.set_depth_bits(1);
int flags = GraphicsPipe::BF_refuse_window;
if (textures_power_2 != ATS_none) {
flags |= GraphicsPipe::BF_size_power_2;
}
if (tex->get_texture_type() == Texture::TT_cube_map) {
flags |= GraphicsPipe::BF_size_square;
}
GraphicsOutput *buffer = get_gsg()->get_engine()->
make_output(get_gsg()->get_pipe(),
name, get_child_sort(),
props, WindowProperties::size(x_size, y_size),
GraphicsPipe::BF_refuse_window,
get_gsg(), get_host());
flags, get_gsg(), get_host());
if (buffer != (GraphicsOutput *)NULL) {
buffer->add_render_texture(tex, to_ram ? RTM_copy_ram : RTM_bind_or_copy);

1
panda/src/display/graphicsPipe.h
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@ -85,6 +85,7 @@ PUBLISHED:
BF_rtt_cumulative = 0x0400, // Buffer supports cumulative render-to-texture.
BF_fb_props_optional = 0x0800, // FrameBufferProperties can be ignored.
BF_size_square = 0x1000, // x_size must equal y_size (e.g. for cube maps)
BF_size_power_2 = 0x2000, // x_size and y_size must each be a power of two
};
INLINE bool is_valid() const;

26
panda/src/display/parasiteBuffer.cxx
View File

@ -12,8 +12,8 @@
//
////////////////////////////////////////////////////////////////////
#include "parasiteBuffer.h"
#include "texture.h"
TypeHandle ParasiteBuffer::_type_handle;
@ -87,6 +87,24 @@ set_size(int x, int y) {
set_size_and_recalc(x, y);
}
////////////////////////////////////////////////////////////////////
// Function: ParasiteBuffer::set_size_and_recalc
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
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);
}
GraphicsOutput::set_size_and_recalc(x, y);
}
////////////////////////////////////////////////////////////////////
// Function: ParasiteBuffer::is_active
// Access: Published, Virtual
@ -135,6 +153,12 @@ begin_frame(FrameMode mode, Thread *current_thread) {
set_size_and_recalc(_host->get_x_size(),
_host->get_y_size());
}
} else {
if (_host->get_x_size() < _x_size ||
_host->get_y_size() < _y_size) {
set_size_and_recalc(min(_x_size, _host->get_x_size()),
min(_y_size, _host->get_y_size()));
}
}
clear_cube_map_selection();

1
panda/src/display/parasiteBuffer.h
View File

@ -60,6 +60,7 @@ PUBLISHED:
void set_size(int x, int y);
public:
void set_size_and_recalc(int x, int y);
virtual bool begin_frame(FrameMode mode, Thread *current_thread);
virtual void end_frame(FrameMode mode, Thread *current_thread);
virtual GraphicsOutput *get_host();