From a0bb0d0114c2b228f2f1715b6fc53d99901b0193 Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sun, 29 Jun 2025 16:43:36 -0700
Subject: Add support for R8 linear textures to render baked AO

---
 src/core/texture.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/core/texture.c')

diff --git a/src/core/texture.c b/src/core/texture.c
index 89f7ec0..372f9e6 100644
--- a/src/core/texture.c
+++ b/src/core/texture.c
@@ -37,6 +37,7 @@ bool gfx_init_texture(Texture* texture, const TextureDesc* desc) {
     gfx_del_texture(texture);
     return false;
   }
+  ASSERT_GL;
 
   texture->format = to_GL_format(desc->format);
   texture->type   = to_GL_type(desc->format);
@@ -50,6 +51,7 @@ bool gfx_init_texture(Texture* texture, const TextureDesc* desc) {
   // Mipmaps.
   if (desc->mipmaps) {
     glGenerateMipmap(texture->target);
+    ASSERT_GL;
   }
 
   // Texture filtering.
@@ -60,6 +62,7 @@ bool gfx_init_texture(Texture* texture, const TextureDesc* desc) {
   GLenum     mag    = linear ? GL_LINEAR : GL_NEAREST;
   glTexParameteri(texture->target, GL_TEXTURE_MIN_FILTER, min);
   glTexParameteri(texture->target, GL_TEXTURE_MAG_FILTER, mag);
+  ASSERT_GL;
 
   // Texture wrapping.
   GLenum wrap = GL_INVALID_ENUM;
@@ -74,6 +77,7 @@ bool gfx_init_texture(Texture* texture, const TextureDesc* desc) {
   glTexParameteri(texture->target, GL_TEXTURE_WRAP_R, wrap);
   glTexParameteri(texture->target, GL_TEXTURE_WRAP_S, wrap);
   glTexParameteri(texture->target, GL_TEXTURE_WRAP_T, wrap);
+  ASSERT_GL;
 
   glBindTexture(texture->target, 0);
   return true;
@@ -119,6 +123,7 @@ void gfx_update_texture(Texture* texture, const TextureDataDesc* desc) {
     FAIL("Unhandled texture dimension");
     break;
   }
+  ASSERT_GL;
 
   glBindTexture(texture->target, 0);
 }
@@ -139,6 +144,8 @@ GLenum to_GL_internal_format(TextureFormat format) {
   switch (format) {
   case TextureDepth:
     return GL_DEPTH_COMPONENT;
+  case TextureR8:
+    return GL_R8;
   case TextureRG16:
     return GL_RG16;
   case TextureRG16F:
@@ -163,6 +170,8 @@ GLenum to_GL_format(TextureFormat format) {
   switch (format) {
   case TextureDepth:
     return GL_DEPTH_COMPONENT;
+  case TextureR8:
+    return GL_RED;
   case TextureRG16:
   case TextureRG16F:
     return GL_RG;
@@ -185,6 +194,7 @@ GLenum to_GL_type(TextureFormat format) {
   case TextureRG16F:
   case TextureR11G11B10F:
     return GL_FLOAT;
+  case TextureR8:
   case TextureRG16:
   case TextureRGB8:
   case TextureRGBA8:
-- 
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