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viewport: consistently use floats for viewports

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OpenGL < 4.0 only supports integer based viewports and internally we
have a mixture of code using floats and integers for viewports. This
patch switches all viewports throughout clutter and cogl to be
represented using floats considering that in the future we may want to
take advantage of floating point viewports with modern hardware/drivers.
This commit is contained in:
Robert Bragg
2011-02-01 16:51:58 +00:00
parent b3d9f313d4
commit bc372d2734
8 changed files with 39 additions and 44 deletions
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26
cogl/cogl-framebuffer-private.h
View File

@ -46,10 +46,10 @@ struct _CoglFramebuffer
CoglMatrixStack *modelview_stack;
CoglMatrixStack *projection_stack;
int viewport_x;
int viewport_y;
int viewport_width;
int viewport_height;
float viewport_x;
float viewport_y;
float viewport_width;
float viewport_height;
CoglClipState clip_state;
@ -173,25 +173,25 @@ _cogl_framebuffer_set_clip_stack (CoglFramebuffer *framebuffer,
void
_cogl_framebuffer_set_viewport (CoglFramebuffer *framebuffer,
int x,
int y,
int width,
int height);
int
float x,
float y,
float width,
float height);
float
_cogl_framebuffer_get_viewport_x (CoglFramebuffer *framebuffer);
int
float
_cogl_framebuffer_get_viewport_y (CoglFramebuffer *framebuffer);
int
float
_cogl_framebuffer_get_viewport_width (CoglFramebuffer *framebuffer);
int
float
_cogl_framebuffer_get_viewport_height (CoglFramebuffer *framebuffer);
void
_cogl_framebuffer_get_viewport4fv (CoglFramebuffer *framebuffer,
int *viewport);
float *viewport);
CoglMatrixStack *
_cogl_framebuffer_get_modelview_stack (CoglFramebuffer *framebuffer);