Method

CoglFramebufferdraw_textured_rectangle

Declaration [src]

void
cogl_framebuffer_draw_textured_rectangle (
  CoglFramebuffer* framebuffer,
  CoglPipeline* pipeline,
  float x_1,
  float y_1,
  float x_2,
  float y_2,
  float s_1,
  float t_1,
  float s_2,
  float t_2
)

Description [src]

Draws a textured rectangle to framebuffer using the given pipeline state with the top left corner positioned at (x_1, y_1) and the bottom right corner positioned at (x_2, y_2). The top left corner will have texture coordinates of (s_1, t_1) and the bottom right corner will have texture coordinates of (s_2, t_2).

The position is the position before the rectangle has been transformed by the model-view matrix and the projection matrix.

This is a high level drawing api that can handle any kind of CoglMetaTexture texture such as CoglTexture2DSliced textures which may internally be comprised of multiple low-level textures. This is unlike low-level drawing apis such as cogl_primitive_draw() which only support low level texture types that are directly supported by GPUs such as CoglTexture2D.

The given texture coordinates will only be used for the first texture layer of the pipeline and if your pipeline has more than one layer then all other layers will have default texture coordinates of s_1=0.0 t_1=0.0 s_2=1.0 t_2=1.0

The given texture coordinates should always be normalized such that (0, 0) corresponds to the top left and (1, 1) corresponds to the bottom right. To map an entire texture across the rectangle pass in s_1=0, t_1=0, s_2=1, t_2=1.

Parameters

pipeline

Type: CoglPipeline

A CoglPipeline state object.

The data is owned by the caller of the method.

x_1

Type: float

X coordinate upper left on screen.

y_1

Type: float

Y coordinate upper left on screen.

x_2

Type: float

X coordinate lower right on screen.

y_2

Type: float

Y coordinate lower right on screen.

s_1

Type: float

S texture coordinate of the top-left coorner.

t_1

Type: float

T texture coordinate of the top-left coorner.

s_2

Type: float

S texture coordinate of the bottom-right coorner.

t_2

Type: float

T texture coordinate of the bottom-right coorner.