thirdparty/scummvm
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TINYGL: Implement internal format argument handling for tglTexImage2D

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This commit is contained in:
Paweł Kołodziejski 2021-12-04 14:39:07 +01:00
parent 44b4b2f740
commit dff981f90b
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GPG key ID: 0BDADC9E74440FF7
1 changed files with 19 additions and 4 deletions
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23
graphics/tinygl/texture.cpp
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@ -131,8 +131,7 @@ void glopBindTexture(GLContext *c, GLParam *p) {
void glopTexImage2D(GLContext *c, GLParam *p) {
int target = p[1].i;
int level = p[2].i;
// "components" is guessed from "format".
// int components = p[3].i;
int internalformat = p[3].i;
int width = p[4].i;
int height = p[5].i;
int border = p[6].i;
@ -145,6 +144,8 @@ void glopTexImage2D(GLContext *c, GLParam *p) {
error("tglTexImage2D: target not handled");
if (level < 0 || level >= MAX_TEXTURE_LEVELS)
error("tglTexImage2D: invalid level");
if (internalformat != TGL_RGBA && internalformat != TGL_RGB)
error("tglTexImage2D: invalid internalformat");
if (border != 0)
error("tglTexImage2D: invalid border");
@ -175,6 +176,20 @@ void glopTexImage2D(GLContext *c, GLParam *p) {
if (!found)
error("TinyGL texture: format 0x%04x and type 0x%04x combination not supported", format, type);
Graphics::PixelBuffer src(pf, pixels);
Graphics::PixelFormat internalPf;
#if defined(SCUMM_LITTLE_ENDIAN)
if (internalformat == TGL_RGBA)
internalPf = Graphics::PixelFormat(4, 8, 8, 8, 8, 0, 8, 16, 24);
else if (internalformat == TGL_RGB)
internalPf = Graphics::PixelFormat(3, 8, 8, 8, 0, 0, 8, 16, 0);
#else
if (internalformat == TGL_RGBA)
internalPf = Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0);
else if (internalformat == TGL_RGB)
internalPf = Graphics::PixelFormat(3, 8, 8, 8, 0, 16, 8, 0, 0);
#endif
Graphics::PixelBuffer srcInternal(internalPf, width * height, DisposeAfterUse::YES);
srcInternal.copyBuffer(0, width * height, src);
if (width > c->_textureSize || height > c->_textureSize)
filter = c->texture_mag_filter;
else
@ -184,14 +199,14 @@ void glopTexImage2D(GLContext *c, GLParam *p) {
case TGL_LINEAR_MIPMAP_LINEAR:
case TGL_LINEAR:
im->pixmap = new Graphics::BilinearTexelBuffer(
src,
srcInternal,
width, height,
c->_textureSize
);
break;
default:
im->pixmap = new Graphics::NearestTexelBuffer(
src,
srcInternal,
width, height,
c->_textureSize
);