Graphics Reference
In-Depth Information
(continued)
Parameters:
vertShaderSrc
vertex shader source code
fragShaderSrc
fragment shader source code
Returns:
A new program object linked with the vertex/fragment shader pair;
0 on failure
char* ESUTIL_API
esLoadTGA
(char *
fileName
, int *
width
,
int *
height
)
Loads an 8-bit, 24-bit, or 32-bit TGA image from a file.
Parameters:
filename
name of the file on disk
width
width of loaded image in pixels
height
height of loaded image in pixels
Returns:
Pointer to loaded image;
NULL
on failure.
int ESUTIL_API
esGenSphere
(int
numSlices,
float
radius,
GLfloat **
vertices,
GLfloat **
normals,
GLfloat **
texCoords,
GLuint **
indices
)
Generates geometry for a sphere. Allocates memory for the vertex data
and stores the results in the arrays. Generates index list for a
GL_TRIANGLE_STRIP
.
Parameters:
numSlices
the number of vertical and horizontal slices in the sphere
vertices
if not
NULL
, will contain array of float3 positions
normals
if not
NULL
, will contain array of float3 normals
texCoords
if not
NULL
, will contain array of float2 texCoords
indices
if not
NULL
, will contain the array of indices for the
triangle strip
Returns:
The number of indices required for rendering the buffers (the number of
indices stored in the indices array if it is not
NULL
) as a
GL_TRIANGLE_STRIP
