Cronocide/Descent3
1
0
Fork 0
mirror of https://github.com/kevinbentley/Descent3.git synced 2025-01-22 11:28:56 +00:00
Code Issues Packages Projects Releases Wiki Activity

[gl] extracted some common GPU rendering code

Browse Source
This commit is contained in:
Edu García 2024-05-08 18:01:22 +01:00
parent 9b936995ce
commit f1941de990
3 changed files with 36 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
renderer/HardwareBaseGPU.cpp
View File

@ -65,6 +65,33 @@ int gpu_last_frame_verts_processed = 0;
int gpu_last_uploaded = 0;
float gpu_Alpha_factor = 1.0f;
float gpu_Alpha_multiplier = 1.0f;
// returns the alpha that we should use
float rend_GetAlphaMultiplier() {
switch (gpu_state.cur_alpha_type) {
case AT_ALWAYS:
case AT_TEXTURE:
case AT_VERTEX:
case AT_TEXTURE_VERTEX:
case AT_SATURATE_VERTEX:
case AT_SATURATE_TEXTURE_VERTEX:
case AT_SPECULAR:
return 1.0;
case AT_CONSTANT:
case AT_CONSTANT_TEXTURE:
case AT_CONSTANT_TEXTURE_VERTEX:
case AT_CONSTANT_VERTEX:
case AT_LIGHTMAP_BLEND:
case AT_LIGHTMAP_BLEND_SATURATE:
case AT_SATURATE_TEXTURE:
case AT_SATURATE_CONSTANT_VERTEX:
return gpu_state.cur_alpha / 255.0;
default:
// Int3(); // no type defined,get jason
return 0;
}
}
// Retrieves an error message
const char *rend_GetErrorMessage() { return Renderer_error_message; }
@ -96,6 +123,12 @@ void rend_SetCharacterParameters(ddgr_color color1, ddgr_color color2, ddgr_colo
rend_FontAlpha[3] = (color4 >> 24) / 255.0f;
}
// Sets the alpha value for constant alpha
void rend_SetAlphaValue(ubyte val) {
gpu_state.cur_alpha = val;
gpu_Alpha_multiplier = rend_GetAlphaMultiplier();
}
// Sets the texture wrapping type
void rend_SetWrapType(wrap_type val) { gpu_state.cur_wrap_type = val; }

1
renderer/HardwareInternal.h
View File

@ -59,5 +59,6 @@ void rend_TransformSetProjection(float trans[4][4]);
void rend_TransformSetModelView(float trans[4][4]);
int rend_ReInit();
float rend_GetAlphaMultiplier();
#endif

37
renderer/HardwareOpenGL.cpp
View File

@ -128,6 +128,7 @@ extern int gpu_last_frame_verts_processed;
extern int gpu_last_uploaded;
extern float gpu_Alpha_factor;
extern float gpu_Alpha_multiplier;
#if defined(_USE_OGL_ACTIVE_TEXTURES)
PFNGLACTIVETEXTUREARBPROC oglActiveTextureARB = NULL;
@ -149,8 +150,6 @@ ushort *opengl_packed_Translate_table = NULL;
ushort *opengl_packed_4444_translate_table = NULL;
extern rendering_state gpu_state;
static float gpu_Alpha_multiplier = 1.0f;
extern renderer_preferred_state gpu_preferred_state;
// These structs are for drawing with OpenGL vertex arrays
@ -1425,32 +1424,6 @@ void opengl_MakeFilterTypeCurrent(int handle, int map_type, int tn) {
CHECK_ERROR(9)
}
// returns the alpha that we should use
float opengl_GetAlphaMultiplier(void) {
switch (gpu_state.cur_alpha_type) {
case AT_ALWAYS:
case AT_TEXTURE:
case AT_VERTEX:
case AT_TEXTURE_VERTEX:
case AT_SATURATE_VERTEX:
case AT_SATURATE_TEXTURE_VERTEX:
case AT_SPECULAR:
return 1.0;
case AT_CONSTANT:
case AT_CONSTANT_TEXTURE:
case AT_CONSTANT_TEXTURE_VERTEX:
case AT_CONSTANT_VERTEX:
case AT_LIGHTMAP_BLEND:
case AT_LIGHTMAP_BLEND_SATURATE:
case AT_SATURATE_TEXTURE:
case AT_SATURATE_CONSTANT_VERTEX:
return gpu_state.cur_alpha / 255.0;
default:
// Int3(); // no type defined,get jason
return 0;
}
}
// Turns on/off multitexture blending
void opengl_SetMultitextureBlendMode(bool state) {
if (OpenGL_multitexture_state == state)
@ -2682,16 +2655,10 @@ void rend_SetAlphaType(sbyte atype) {
break;
}
gpu_state.cur_alpha_type = atype;
gpu_Alpha_multiplier = opengl_GetAlphaMultiplier();
gpu_Alpha_multiplier = rend_GetAlphaMultiplier();
CHECK_ERROR(15)
}
// Sets the alpha value for constant alpha
void rend_SetAlphaValue(ubyte val) {
gpu_state.cur_alpha = val;
gpu_Alpha_multiplier = opengl_GetAlphaMultiplier();
}
// Draws a line using the states of the renderer
void rend_DrawSpecialLine(g3Point *p0, g3Point *p1) {
g3_RefreshTransforms(true);