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WARNING: REDESIGN of rlgl framebuffers API #721

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This redesign allows more flexibility when creating RenderTexture and a simplification (and hopefully removal) of `GenTexture*()` functions, that should not belong to this model but the user code, due to the use of custom shaders.

Also, this new API opens the door for a possible GBuffers type and advance rendering possibilities...

Some functions of the API have been also simplified or even removed.

rlgl module can be used as an standalone library, so, a version for the library has been added: v3.1.0, matching current raylib version.
This commit is contained in:
raysan5
2020-09-18 02:11:49 +02:00
parent fa2c114636
commit cdc8850e68
4 changed files with 197 additions and 227 deletions
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47
src/textures.c
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@ -72,7 +72,7 @@
#include "utils.h" // Required for: fopen() Android mapping
#include "rlgl.h" // raylib OpenGL abstraction layer to OpenGL 1.1, 3.3 or ES2
// Required for: rlLoadTexture() rlDeleteTextures(),
// Required for: rlLoadTexture() rlUnloadTexture(),
// rlGenerateMipmaps(), some funcs for DrawTexturePro()
// Support only desired texture formats on stb_image
@ -2796,7 +2796,38 @@ TextureCubemap LoadTextureCubemap(Image image, int layoutType)
// NOTE: Render texture is loaded by default with RGBA color attachment and depth RenderBuffer
RenderTexture2D LoadRenderTexture(int width, int height)
{
RenderTexture2D target = rlLoadRenderTexture(width, height, UNCOMPRESSED_R8G8B8A8, 24, false);
RenderTexture2D target = { 0 };
target.id = rlLoadFramebuffer(width, height); // Load an empty framebuffer
if (target.id > 0)
{
rlEnableFramebuffer(target.id);
// Create color texture (default to RGBA)
target.texture.id = rlLoadTexture(NULL, width, height, UNCOMPRESSED_R8G8B8A8, 1);
target.texture.width = width;
target.texture.height = height;
target.texture.format = UNCOMPRESSED_R8G8B8A8;
target.texture.mipmaps = 1;
// Create depth renderbuffer/texture
target.depth.id = rlLoadTextureDepth(width, height, true);
target.depth.width = width;
target.depth.height = height;
target.depth.format = 19; //DEPTH_COMPONENT_24BIT?
target.depth.mipmaps = 1;
// Attach color texture and depth renderbuffer/texture to FBO
rlFramebufferAttach(target.id, target.texture.id, RL_ATTACHMENT_COLOR_TEXTURE); // COLOR attachment
rlFramebufferAttach(target.id, target.depth.id, RL_ATTACHMENT_DEPTH_RENDERBUFFER); // DEPTH attachment
// Check if fbo is complete with attachments (valid)
if (rlFramebufferComplete(target.id)) TRACELOG(LOG_INFO, "FBO: [ID %i] Framebuffer object created successfully", target.id);
rlDisableFramebuffer();
}
else TRACELOG(LOG_WARNING, "FBO: Framebuffer object can not be created");
return target;
}
@ -2806,7 +2837,7 @@ void UnloadTexture(Texture2D texture)
{
if (texture.id > 0)
{
rlDeleteTextures(texture.id);
rlUnloadTexture(texture.id);
TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Unloaded texture data from VRAM (GPU)", texture.id);
}
@ -2815,7 +2846,15 @@ void UnloadTexture(Texture2D texture)
// Unload render texture from GPU memory (VRAM)
void UnloadRenderTexture(RenderTexture2D target)
{
if (target.id > 0) rlDeleteRenderTextures(target);
if (target.id > 0)
{
// Color texture attached to FBO is deleted
rlUnloadTexture(target.texture.id);
// NOTE: Depth texture/renderbuffer is automatically
// queried and deleted before deleting framebuffer
rlUnloadFramebuffer(target.id);
}
}
// Update GPU texture with new data