DrawSetTextureRGBA: Difference between revisions
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=void '''DrawSetTextureRGBA'''(int id, const unsigned char *rgba, | =The function= | ||
void [[ISurface]]::'''DrawSetTextureRGBA'''( int id, const unsigned char *rgba, int wide, int tall, int hardwareFilter, bool forceReload ) = 0 | |||
This is a function that you should use to draw raw RGBA data to the HUD, for example when you are rendering a mask. | This is a function that you should use to draw raw RGBA data to the HUD, for example when you are rendering a mask. | ||
==Sample== | ==Sample== | ||
===Initialization=== | ===Initialization=== | ||
unsigned char abPic[ | #define HEIGHT 256 | ||
#define WIDTH 256 | |||
#define PIXEL_BYTES 4 // RGBA (never changes) | |||
unsigned char abPic[ HEIGHT * WIDTH * PIXEL_BYTES ]; | |||
===Raw Data=== | ===Raw Data=== | ||
for ( | for (y = 0; y < HEIGHT; y++) // up/down traverse | ||
{ | { | ||
for ( | for (x = 0; x < WIDTH; x++) // left/right traverse | ||
{ | { | ||
int offset = ( | int offset = (x + y * WIDTH) * PIXEL_BYTES; | ||
char *dst = ((char*)abPic) + | char *dst = ((char*)abPic) + offset; | ||
dst[0] = (unsigned char)255;//red | dst[0] = (unsigned char)255;//red | ||
| Line 18: | Line 23: | ||
} | } | ||
} | } | ||
===Set Up Texture ID=== | ===Set Up Texture ID=== | ||
m_iHudTexture=surface()->[[CreateNewTextureID]](); | m_iHudTexture = surface()->[[CreateNewTextureID]](true); | ||
surface()->'''DrawSetTextureRGBA'''(m_iHudTexture,(unsigned char*)abPic, | surface()->'''DrawSetTextureRGBA'''( m_iHudTexture, (unsigned char*)abPic, HEIGHT, WIDTH, false, true ); | ||
surface()->[[DrawSetColor]](Color(255,255,255,128)); | surface()->[[DrawSetColor]]( Color( 255, 255, 255, 128 ) ); | ||
surface()->[[DrawTexturedRect]](0,0,GetWide(),GetTall()); | surface()->[[DrawTexturedRect]]( 0, 0, GetWide(), GetTall() ); | ||
==See | ==See also== | ||
* [[CreateProceduralTexture]] | * [[CreateProceduralTexture]] | ||
* [[CreateMaterial]] | * [[CreateMaterial]] | ||
[[Category:ISurface]] | [[Category:ISurface]] | ||
[[Category:Developer Issues and Workarounds]] | [[Category:Developer Issues and Workarounds]] | ||
Latest revision as of 09:15, 8 January 2024
The function
void ISurface::DrawSetTextureRGBA( int id, const unsigned char *rgba, int wide, int tall, int hardwareFilter, bool forceReload ) = 0
This is a function that you should use to draw raw RGBA data to the HUD, for example when you are rendering a mask.
Sample
Initialization
#define HEIGHT 256 #define WIDTH 256 #define PIXEL_BYTES 4 // RGBA (never changes) unsigned char abPic[ HEIGHT * WIDTH * PIXEL_BYTES ];
Raw Data
for (y = 0; y < HEIGHT; y++) // up/down traverse
{
for (x = 0; x < WIDTH; x++) // left/right traverse
{
int offset = (x + y * WIDTH) * PIXEL_BYTES;
char *dst = ((char*)abPic) + offset;
dst[0] = (unsigned char)255;//red
dst[1] = (unsigned char)255;//green
dst[2] = (unsigned char)255;//blue
dst[3] = (unsigned char)255;//alpha
}
}
Set Up Texture ID
m_iHudTexture = surface()->CreateNewTextureID(true); surface()->DrawSetTextureRGBA( m_iHudTexture, (unsigned char*)abPic, HEIGHT, WIDTH, false, true ); surface()->DrawSetColor( Color( 255, 255, 255, 128 ) ); surface()->DrawTexturedRect( 0, 0, GetWide(), GetTall() );