From 29958677606ae3bc46b871303f2b2d956db90bfc Mon Sep 17 00:00:00 2001
From: vaxerski <43317083+vaxerski@users.noreply.github.com>
Date: Sat, 22 Oct 2022 21:10:40 +0100
Subject: [PATCH] Transpose matrices on LEGACY_RENDERER

---
 src/render/OpenGL.cpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/render/OpenGL.cpp b/src/render/OpenGL.cpp
index 1f910d30..d52fee79 100644
--- a/src/render/OpenGL.cpp
+++ b/src/render/OpenGL.cpp
@@ -329,7 +329,12 @@ void CHyprOpenGLImpl::renderRectWithDamage(wlr_box* box, const CColor& col, pixm
 
     glUseProgram(m_RenderData.pCurrentMonData->m_shQUAD.program);
 
+#ifndef GLES2
     glUniformMatrix3fv(m_RenderData.pCurrentMonData->m_shQUAD.proj, 1, GL_TRUE, glMatrix);
+#else
+    wlr_matrix_transpose(glMatrix, glMatrix);
+    glUniformMatrix3fv(m_RenderData.pCurrentMonData->m_shQUAD.proj, 1, GL_FALSE, glMatrix);
+#endif
     glUniform4f(m_RenderData.pCurrentMonData->m_shQUAD.color, col.r / 255.f, col.g / 255.f, col.b / 255.f, col.a / 255.f);
 
     wlr_box transformedBox;
@@ -438,7 +443,12 @@ void CHyprOpenGLImpl::renderTextureInternalWithDamage(const CTexture& tex, wlr_b
 
     glUseProgram(shader->program);
 
+#ifndef GLES2
     glUniformMatrix3fv(shader->proj, 1, GL_TRUE, glMatrix);
+#else
+    wlr_matrix_transpose(glMatrix, glMatrix);
+    glUniformMatrix3fv(shader->proj, 1, GL_FALSE, glMatrix);
+#endif
     glUniform1i(shader->tex, 0);
     glUniform1f(shader->alpha, alpha / 255.f);
     glUniform1i(shader->discardOpaque, (int)discardOpaque);
@@ -562,7 +572,12 @@ CFramebuffer* CHyprOpenGLImpl::blurMainFramebufferWithDamage(float a, wlr_box* p
         glUseProgram(pShader->program);
 
         // prep two shaders
+#ifndef GLES2
         glUniformMatrix3fv(pShader->proj, 1, GL_TRUE, glMatrix);
+#else
+        wlr_matrix_transpose(glMatrix, glMatrix);
+        glUniformMatrix3fv(pShader->proj, 1, GL_FALSE, glMatrix);
+#endif
         glUniform1f(pShader->radius, *PBLURSIZE * (a / 255.f));  // this makes the blursize change with a
         if (pShader == &m_RenderData.pCurrentMonData->m_shBLUR1)
             glUniform2f(m_RenderData.pCurrentMonData->m_shBLUR1.halfpixel, 0.5f / (m_RenderData.pMonitor->vecPixelSize.x / 2.f), 0.5f / (m_RenderData.pMonitor->vecPixelSize.y / 2.f));
@@ -843,7 +858,12 @@ void CHyprOpenGLImpl::renderBorder(wlr_box* box, const CColor& col, int round) {
 
     glUseProgram(m_RenderData.pCurrentMonData->m_shBORDER1.program);
 
+#ifndef GLES2
     glUniformMatrix3fv(m_RenderData.pCurrentMonData->m_shBORDER1.proj, 1, GL_TRUE, glMatrix);
+#else
+    wlr_matrix_transpose(glMatrix, glMatrix);
+    glUniformMatrix3fv(m_RenderData.pCurrentMonData->m_shBORDER1.proj, 1, GL_FALSE, glMatrix);
+#endif
     glUniform4f(m_RenderData.pCurrentMonData->m_shBORDER1.color, col.r / 255.f, col.g / 255.f, col.b / 255.f, col.a / 255.f);
 
     const auto TOPLEFT = Vector2D(round, round);
@@ -1103,7 +1123,12 @@ void CHyprOpenGLImpl::renderRoundedShadow(wlr_box* box, int round, int range, fl
 
     glUseProgram(m_RenderData.pCurrentMonData->m_shSHADOW.program);
 
+#ifndef GLES2
     glUniformMatrix3fv(m_RenderData.pCurrentMonData->m_shSHADOW.proj, 1, GL_TRUE, glMatrix);
+#else
+    wlr_matrix_transpose(glMatrix, glMatrix);
+    glUniformMatrix3fv(m_RenderData.pCurrentMonData->m_shSHADOW.proj, 1, GL_FALSE, glMatrix);
+#endif
     glUniform4f(m_RenderData.pCurrentMonData->m_shSHADOW.color, col.r / 255.f, col.g / 255.f, col.b / 255.f, col.a / 255.f * a);
 
     const auto TOPLEFT = Vector2D(range + round, range + round);