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authorAndrei Karas <akaras@inbox.ru>2014-06-08 23:04:53 +0300
committerAndrei Karas <akaras@inbox.ru>2014-06-09 11:42:32 +0300
commit49aba83fa6f3393214919166c42fb55c5a9a7796 (patch)
treecfdb4484e6165e97bafdd44956a8c8bfd08f0650 /src/render/modernopenglgraphics.cpp
parent7a0ce777e5d7e3c5ba562ea1c811c0c3cb17a976 (diff)
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Add basic shaders in modernopengl.
Add draw/fill rectangle functions.
Diffstat (limited to 'src/render/modernopenglgraphics.cpp')
-rw-r--r--src/render/modernopenglgraphics.cpp116
1 files changed, 111 insertions, 5 deletions
diff --git a/src/render/modernopenglgraphics.cpp b/src/render/modernopenglgraphics.cpp
index 566dec714..141b6ccc7 100644
--- a/src/render/modernopenglgraphics.cpp
+++ b/src/render/modernopenglgraphics.cpp
@@ -64,6 +64,10 @@ ModernOpenGLGraphics::ModernOpenGLGraphics() :
mImageCached(0),
mFloatColor(1.0F),
mMaxVertices(500),
+ mSimpleId(0U),
+ mSimpleColor(0U),
+ mSimplePos(0),
+ mScreenUniform(0U),
mColorAlpha(false),
#ifdef DEBUG_BIND_TEXTURE
mOldTexture(),
@@ -78,6 +82,8 @@ ModernOpenGLGraphics::ModernOpenGLGraphics() :
ModernOpenGLGraphics::~ModernOpenGLGraphics()
{
deleteArraysInternal();
+ if (mSimpleProgram)
+ mSimpleProgram->decRef();
}
void ModernOpenGLGraphics::initArrays(const int vertCount)
@@ -105,10 +111,28 @@ void ModernOpenGLGraphics::postInit()
{
logger->log("Compiling shaders");
mSimpleProgram = shaders.getSimpleProgram();
+ mSimpleId = mSimpleProgram->getProgramId();
if (mSimpleProgram)
+ {
logger->log("Shaders compilation done.");
+ mglUseProgram(mSimpleId);
+ mSimplePos = mglGetAttribLocation(mSimpleId, "simplePos");
+ mglEnableVertexAttribArray(mSimplePos);
+ mSimpleColor = mglGetUniformLocation(mSimpleId, "simpleColor");
+ mScreenUniform = mglGetUniformLocation(mSimpleId, "screen");
+ screenResized();
+ }
else
+ {
logger->error("Shaders compilation error.");
+ }
+}
+
+void ModernOpenGLGraphics::screenResized()
+{
+ mglUniform2f(mScreenUniform,
+ static_cast<float>(mWidth) / 2.0f,
+ static_cast<float>(mHeight) / 2.0f);
}
void ModernOpenGLGraphics::deleteArrays()
@@ -141,6 +165,35 @@ bool ModernOpenGLGraphics::setVideoMode(const int w, const int h,
return setOpenGLMode();
}
+void ModernOpenGLGraphics::setColor(const Color &color)
+{
+ setColorAll(color, color);
+}
+
+void ModernOpenGLGraphics::setColorAll(const Color &color,
+ const Color &color2)
+{
+ mColor = color;
+ mColor2 = color2;
+ mColorAlpha = (color.a != 255);
+ if (mColorAlpha)
+ {
+ mglUniform4f(mSimpleColor,
+ static_cast<float>(color.r) / 255.0F,
+ static_cast<float>(color.g) / 255.0F,
+ static_cast<float>(color.b) / 255.0F,
+ static_cast<float>(color.a) / 255.0F);
+ }
+ else
+ {
+ mglUniform4f(mSimpleColor,
+ static_cast<float>(color.r) / 255.0F,
+ static_cast<float>(color.g) / 255.0F,
+ static_cast<float>(color.b) / 255.0F,
+ 1.0F);
+ }
+}
+
static inline void drawQuad(const Image *const image,
const int srcX, const int srcY,
const int dstX, const int dstY,
@@ -471,12 +524,60 @@ void ModernOpenGLGraphics::drawLine(int x1, int y1, int x2, int y2)
void ModernOpenGLGraphics::drawRectangle(const Rect& rect)
{
- drawRectangle(rect, false);
+ setTexturingAndBlending(false);
+ const ClipRect &clipArea = mClipStack.top();
+ const int x1 = rect.x + clipArea.xOffset;
+ const int y1 = rect.y + clipArea.yOffset;
+ const int x2 = x1 + rect.width;
+ const int y2 = y1 + rect.height;
+ GLfloat vertices[] =
+ {
+ x1, y1,
+ x1, y2,
+ x2, y2,
+ x2, y1
+ };
+ GLuint vbo;
+ mglGenBuffers(1, &vbo);
+ mglBindBuffer(GL_ARRAY_BUFFER, vbo);
+ mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+ vertices, GL_DYNAMIC_DRAW);
+// mglEnableVertexAttribArray(mSimplePos);
+ mglVertexAttribPointer(mSimplePos, 2, GL_FLOAT, GL_FALSE, 0, 0);
+
+ glDrawArrays(GL_LINE_LOOP, 0, 4);
+ updateScreen();
+
+ mglDeleteBuffers(1, &vbo);
}
void ModernOpenGLGraphics::fillRectangle(const Rect& rect)
{
- drawRectangle(rect, true);
+ setTexturingAndBlending(false);
+ const ClipRect &clipArea = mClipStack.top();
+ const int x1 = rect.x + clipArea.xOffset;
+ const int y1 = rect.y + clipArea.yOffset;
+ const int x2 = x1 + rect.width;
+ const int y2 = y1 + rect.height;
+ GLfloat vertices[] =
+ {
+ x1, y1,
+ x2, y1,
+ x1, y2,
+ x2, y2
+ };
+ GLuint vbo;
+ mglGenBuffers(1, &vbo);
+ mglBindBuffer(GL_ARRAY_BUFFER, vbo);
+ mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+ vertices, GL_DYNAMIC_DRAW);
+// mglEnableVertexAttribArray(mSimplePos);
+ mglVertexAttribPointer(mSimplePos, 2, GL_FLOAT, GL_FALSE, 0, 0);
+
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+ updateScreen();
+
+ mglDeleteBuffers(1, &vbo);
}
void ModernOpenGLGraphics::setTexturingAndBlending(const bool enable)
@@ -491,16 +592,21 @@ void ModernOpenGLGraphics::setTexturingAndBlending(const bool enable)
}
else
{
- if (mAlpha)
+ if (mAlpha && !mColorAlpha)
{
glDisable(GL_BLEND);
mAlpha = false;
}
+ else if (!mAlpha && mColorAlpha)
+ {
+ glEnable(GL_BLEND);
+ mAlpha = true;
+ }
}
}
-void ModernOpenGLGraphics::drawRectangle(const Rect& rect,
- const bool filled)
+void ModernOpenGLGraphics::drawRectangle(const Rect& rect A_UNUSED,
+ const bool filled A_UNUSED)
{
}