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feat(rendering): fix transparency issues + multiply drawRect color

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maelstrom 2025-11-20 11:02:09 +01:00
parent 1d6c931b86
commit d7532587ec
2 changed files with 17 additions and 14 deletions
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1
core/src/rendering/font.cpp
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@ -144,6 +144,7 @@ void drawText(std::shared_ptr<Font> font, std::string text, float x, float y, fl
// activate corresponding render state
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // TODO: Figure out why when changed to GL_ONE this causes graphical errors
fontShader->use();
fontShader->set("textColor", color);

30
core/src/rendering/renderer.cpp
View file

@ -1,6 +1,4 @@
#include <glad/gl.h>
#include <cmath>
#include <cstdio>
#include <glm/ext.hpp>
#include <glm/ext/matrix_clip_space.hpp>
#include <glm/ext/matrix_float4x4.hpp>
@ -79,8 +77,6 @@ void renderInit(int width, int height) {
glEnable(GL_BLEND);
glEnable(GL_MULTISAMPLE);
glFrontFace(GL_CW);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
// glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
debugFontTexture = new Texture("assets/textures/debugfnt.bmp", GL_RGB);
@ -170,7 +166,7 @@ void renderParts() {
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
// Use shader
shader->use();
@ -234,7 +230,7 @@ void renderSurfaceExtras() {
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
// Use shader
ghostShader->use();
@ -358,7 +354,7 @@ void renderAABB() {
glCullFace(GL_BACK);
glFrontFace(GL_CW);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
// Use shader
ghostShader->use();
@ -397,7 +393,7 @@ void renderWireframe() {
glCullFace(GL_BACK);
glFrontFace(GL_CW);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
// Use shader
@ -437,7 +433,7 @@ void renderOutlines() {
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
// Use shader
outlineShader->use();
@ -500,7 +496,7 @@ void renderSelectionAssembly() {
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
PartAssembly selectionAssembly = PartAssembly::FromSelection(gDataModel->GetService<Selection>());
@ -538,7 +534,7 @@ void renderRotationArcs() {
glCullFace(GL_BACK);
glFrontFace(GL_CW);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
// Use shader
handleShader->use();
@ -636,7 +632,6 @@ void renderMessages() {
// glEnable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
// glEnable(GL_BLEND);
// glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
for (auto it = gWorkspace()->GetDescendantsStart(); it != gWorkspace()->GetDescendantsEnd(); it++) {
if (!it->IsA<Message>()) continue;
@ -653,7 +648,7 @@ void renderMessages() {
if (message->text == "") continue;
float strokedTextWidth = calcTextWidth(sansSerif, message->text, true);
drawRect(0, 0, viewportWidth, viewportHeight, glm::vec4(0.5));
drawRect(0, 0, viewportWidth, viewportHeight, glm::vec4(0.5, 0.5, 0.5, 0.5));
drawText(sansSerif, message->text, ((float)viewportWidth - textWidth) / 2, ((float)viewportHeight - sansSerif->height) / 2, 1.f, glm::vec3(0), true);
drawText(sansSerif, message->text, ((float)viewportWidth - strokedTextWidth) / 2, ((float)viewportHeight - sansSerif->height) / 2, 1.f, glm::vec3(1), false);
}
@ -698,6 +693,13 @@ void render() {
void drawRect(int x, int y, int width, int height, glm::vec4 color) {
// GL_CULL_FACE has to be disabled as we are flipping the order of the vertices here, besides we don't really care about it
glDisable(GL_CULL_FACE);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
// Multiply color
float a = color.a;
color *= a;
color.a = a;
glm::mat4 model(1.0f); // Same applies to this VV
// Make sure to cast these to floats, as mat4<i> is a different type that is not compatible
glm::mat4 proj = glm::ortho(0.f, (float)viewportWidth, (float)viewportHeight, 0.f, -1.f, 1.f);
@ -717,4 +719,4 @@ void setViewport(int width, int height) {
void setDebugRendererEnabled(bool enabled) {
debugRendererEnabled = enabled;
}
}