Improve positions of the textures in 08-update. Scan through the LODs…

… of the textures with shader.
bkaradzic · Jun 14, 2024 · 9b40283 · 9b40283
1 parent 9547e79
commit 9b40283
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Showing 3 changed files with 11 additions and 6 deletions.
diff --git a/examples/08-update/fs_update.sc b/examples/08-update/fs_update.sc
@@ -8,8 +8,10 @@ $input v_texcoord0
 #include "../common/common.sh"
 
 SAMPLERCUBE(s_texCube, 0);
+uniform vec4 u_time;
 
 void main()
 {
-	gl_FragColor = textureCube(s_texCube, v_texcoord0);
+	float lod = (1.0 - cos(u_time.x)) * 4.0; // 0 to 8
+	gl_FragColor = textureCubeLod(s_texCube, v_texcoord0, lod);
 }
diff --git a/examples/08-update/fs_update_cmp.sc b/examples/08-update/fs_update_cmp.sc
@@ -9,7 +9,10 @@ $input v_texcoord0
 
 SAMPLER2D(s_texColor, 0);
 
+uniform vec4 u_time;
+
 void main()
 {
-	gl_FragColor = texture2D(s_texColor, v_texcoord0.xy*0.5+0.5);
+	float lod = (1.0 - cos(u_time.x)) * 4.0; // 0 to 8
+	gl_FragColor = texture2DLod(s_texColor, v_texcoord0.xy*0.5+0.5, lod);
 }
diff --git a/examples/08-update/update.cpp b/examples/08-update/update.cpp
@@ -761,7 +761,7 @@ class ExampleUpdate : public entry::AppI
 				if (bgfx::isValid(m_textureCube[ii]))
 				{
 					float mtx[16];
-					bx::mtxSRT(mtx, 0.65f, 0.65f, 0.65f, time, time*0.37f, 0.0f, -2.5f +ii*1.8f, 0.0f, 0.0f);
+					bx::mtxSRT(mtx, 0.65f, 0.65f, 0.65f, time, time*0.37f, 0.0f, -2.5f +ii*1.8f, 0.3f, 0.0f);
 
 					// Set model matrix for rendering.
 					bgfx::setTransform(mtx);
@@ -788,7 +788,7 @@ class ExampleUpdate : public entry::AppI
 
 			const float aspectRatio = float(m_height)/float(m_width);
 			const float margin = 0.7f;
-			const float sizeX = 0.5f * numColumns * 2.3f + margin;
+			const float sizeX = 0.5f * (numColumns + 2) * 2.3f + margin;
 			const float sizeY = sizeX * aspectRatio;
 
 			const bgfx::Caps* caps = bgfx::getCaps();
@@ -798,7 +798,7 @@ class ExampleUpdate : public entry::AppI
 			bx::mtxMul(worldToScreen, proj, projToScreen);
 
 			float mtx[16];
-			bx::mtxTranslate(mtx, -sizeX + margin + 1.0f, 1.9f, 0.0f);
+			bx::mtxTranslate(mtx, -sizeX + margin + 1.0f, 0.0f, 0.0f);
 
 			// Set model matrix for rendering.
 			bgfx::setTransform(mtx);
@@ -851,7 +851,7 @@ class ExampleUpdate : public entry::AppI
 
 			for (uint32_t ii = 0; ii < BX_COUNTOF(m_textures); ++ii)
 			{
-				bx::mtxTranslate(mtx, xpos + (ii%numColumns) * 2.3f, sizeY - margin - 2.8f + (ii/numColumns) * 2.3f, 0.0f);
+				bx::mtxTranslate(mtx, xpos + (1+ii%numColumns) * 2.3f, sizeY - margin - 2.8f + (ii/numColumns) * 2.3f, 0.0f);
 
 				// Set model matrix for rendering.
 				bgfx::setTransform(mtx);