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GL: Support larger dimension buffers

This commit is contained in:
Vicki Pfau 2017-02-16 16:59:37 -08:00
parent 0b81939104
commit 2bbc6e371f
3 changed files with 12 additions and 9 deletions
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18
src/platform/opengl/gl.c
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@ -7,13 +7,6 @@
#include <mgba-util/math.h>
static const GLint _glVertices[] = {
0, 0,
256, 0,
256, 256,
0, 256
};
static const GLint _glTexCoords[] = {
0, 0,
1, 0,
@ -48,6 +41,15 @@ static void mGLContextSetDimensions(struct VideoBackend* v, unsigned width, unsi
#else
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, toPow2(width), toPow2(height), 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
#endif
context->vertices[0] = 0;
context->vertices[1] = 0;
context->vertices[2] = toPow2(width);
context->vertices[3] = 0;
context->vertices[4] = toPow2(width);
context->vertices[5] = toPow2(height);
context->vertices[6] = 0;
context->vertices[7] = toPow2(height);
}
static void mGLContextDeinit(struct VideoBackend* v) {
@ -83,7 +85,7 @@ void mGLContextDrawFrame(struct VideoBackend* v) {
glEnable(GL_TEXTURE_2D);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_INT, 0, _glVertices);
glVertexPointer(2, GL_INT, 0, context->vertices);
glTexCoordPointer(2, GL_INT, 0, _glTexCoords);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();

1
src/platform/opengl/gl.h
View File

@ -27,6 +27,7 @@ struct mGLContext {
struct VideoBackend d;
GLuint tex;
GLint vertices[8];
};
void mGLContextCreate(struct mGLContext*);

2
src/platform/qt/DisplayGL.cpp
View File

@ -229,7 +229,7 @@ PainterGL::PainterGL(int majorVersion, QGLWidget* parent)
m_backend->lockAspectRatio = false;
for (int i = 0; i < 2; ++i) {
m_free.append(new uint32_t[256 * 256]);
m_free.append(new uint32_t[256 * 384]);
}
}