void MythRenderOpenGL2::DrawBitmapPriv(uint *textures, uint texture_count,
const QRectF *src, const QRectF *dst,
uint prog)
{
if (prog && !m_shader_objects.contains(prog))
prog = 0;
if (prog == 0)
prog = m_shaders[kShaderDefault];
uint first = textures[0];
EnableShaderObject(prog);
SetShaderParams(prog, &m_projection[0][0], "u_projection");
SetShaderParams(prog, &m_transforms.top().m[0][0], "u_transform");
SetBlend(false);
EnableTextures(first);
uint active_tex = 0;
for (uint i = 0; i < texture_count; i++)
{
if (m_textures.contains(textures[i]))
{
ActiveTexture(GL_TEXTURE0 + active_tex++);
glBindTexture(m_textures[textures[i]].m_type, textures[i]);
}
}
m_glBindBuffer(GL_ARRAY_BUFFER, m_textures[first].m_vbo);
UpdateTextureVertices(first, src, dst);
m_glBufferData(GL_ARRAY_BUFFER, kVertexSize, NULL, GL_STREAM_DRAW);
void* target = m_glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
if (target)
memcpy(target, m_textures[first].m_vertex_data, kVertexSize);
m_glUnmapBuffer(GL_ARRAY_BUFFER);
m_glEnableVertexAttribArray(VERTEX_INDEX);
m_glEnableVertexAttribArray(TEXTURE_INDEX);
m_glVertexAttribPointer(VERTEX_INDEX, VERTEX_SIZE, GL_FLOAT, GL_FALSE,
VERTEX_SIZE * sizeof(GLfloat),
(const void *) kVertexOffset);
m_glVertexAttrib4f(COLOR_INDEX, 1.0, 1.0, 1.0, 1.0);
m_glVertexAttribPointer(TEXTURE_INDEX, TEXTURE_SIZE, GL_FLOAT, GL_FALSE,
TEXTURE_SIZE * sizeof(GLfloat),
(const void *) kTextureOffset);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
m_glDisableVertexAttribArray(TEXTURE_INDEX);
m_glDisableVertexAttribArray(VERTEX_INDEX);
m_glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void MythRenderOpenGL2::DrawBitmapPriv(uint tex, const QRect *src,
const QRect *dst, uint prog, int alpha,
int red, int green, int blue)
{
if (prog && !m_shader_objects.contains(prog))
prog = 0;
if (prog == 0)
prog = m_shaders[kShaderDefault];
EnableShaderObject(prog);
SetShaderParams(prog, &m_projection[0][0], "u_projection");
SetShaderParams(prog, &m_transforms.top().m[0][0], "u_transform");
SetBlend(true);
EnableTextures(tex);
glBindTexture(m_textures[tex].m_type, tex);
m_glBindBuffer(GL_ARRAY_BUFFER, m_textures[tex].m_vbo);
UpdateTextureVertices(tex, src, dst);
m_glBufferData(GL_ARRAY_BUFFER, kVertexSize, NULL, GL_STREAM_DRAW);
void* target = m_glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
if (target)
memcpy(target, m_textures[tex].m_vertex_data, kVertexSize);
m_glUnmapBuffer(GL_ARRAY_BUFFER);
m_glEnableVertexAttribArray(VERTEX_INDEX);
m_glEnableVertexAttribArray(TEXTURE_INDEX);
m_glVertexAttribPointer(VERTEX_INDEX, VERTEX_SIZE, GL_FLOAT, GL_FALSE,
VERTEX_SIZE * sizeof(GLfloat),
(const void *) kVertexOffset);
m_glVertexAttrib4f(COLOR_INDEX, red / 255.0, green / 255.0, blue / 255.0, alpha / 255.0);
m_glVertexAttribPointer(TEXTURE_INDEX, TEXTURE_SIZE, GL_FLOAT, GL_FALSE,
TEXTURE_SIZE * sizeof(GLfloat),
(const void *) kTextureOffset);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
m_glDisableVertexAttribArray(TEXTURE_INDEX);
m_glDisableVertexAttribArray(VERTEX_INDEX);
m_glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void UIOpenGLTextures::UpdateTexture(GLTexture *Texture, const void *Buffer)
{
// N.B. GetTextureBuffer must be called first
if (!Texture)
return;
QSize size = Texture->m_actualSize;
if (Texture->m_pbo)
{
m_glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
glTexSubImage2D(Texture->m_type, 0, 0, 0, size.width(),
size.height(), Texture->m_dataFmt,
Texture->m_dataType, 0);
m_glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}
else
{
glTexSubImage2D(Texture->m_type, 0, 0, 0, size.width(),
size.height(), Texture->m_dataFmt,
Texture->m_dataType, Buffer);
}
}