static ID3D10ShaderResourceView *BrightnessImage(ID3D10ShaderResourceView *pTexture, sImageInfo *pInfo)
{
ID3D10Device *device = GutGetGraphicsDeviceDX10();
int w = pInfo->m_iWidth/4;
int h = pInfo->m_iHeight/4;
float fTexelW = 1.0f/(float)w;
float fTexelH = 1.0f/(float)h;
D3D10_VIEWPORT vp = {0, 0, w, h, 0.0f, 1.0f};
device->RSSetViewports(1, &vp);
device->VSSetShader(g_pBlurVS);
device->PSSetShader(g_pBrightnessPS);
ID3D10Buffer *buffer_array[2] = {g_pVSConstantBuffer, g_pBrightnessConstantBuffer};
device->VSSetConstantBuffers(0, 2, buffer_array);
device->PSSetConstantBuffers(0, 2, buffer_array);
UINT stride = sizeof(Vertex_VT);
UINT offset = 0;
g_pDevice->IASetInputLayout(g_pVertexLayout);
g_pDevice->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
g_pDevice->IASetVertexBuffers(0, 1, &g_pVertexBuffer, &stride, &offset);
device->OMSetRenderTargets(1, &g_pFrameRTView[1], NULL);
Vector4 *pConstants;
g_pBrightnessConstantBuffer->Map( D3D10_MAP_WRITE_DISCARD, NULL, (void **) &pConstants);
pConstants[0] = g_vBrightnessOffset;
pConstants[1] = g_vBrightnessScale;
g_pBrightnessConstantBuffer->Unmap();
g_pDevice->PSSetShaderResources(0, 1, &pTexture);
g_pDevice->Draw(4, 0);
return g_pFrameSRView[1];
}
static ID3D10ShaderResourceView *BlurImage(ID3D10ShaderResourceView *pTexture, sImageInfo *pInfo)
{
int w = pInfo->m_iWidth/4;
int h = pInfo->m_iHeight/4;
float fTexelW = 1.0f/(float)w;
float fTexelH = 1.0f/(float)h;
D3D10_VIEWPORT vp = {0, 0, w, h, 0.0f, 1.0f};
g_pDevice->RSSetViewports(1, &vp);
const int num_samples = KERNELSIZE;
Vector4 vTexOffsetX[num_samples];
Vector4 vTexOffsetY[num_samples];
for ( int i=0; i<num_samples; i++ )
{
vTexOffsetX[i].Set(g_uv_offset_table[i] * fTexelW, 0.0f, 0.0f, g_weight_table[i]);
vTexOffsetY[i].Set(0.0f, g_uv_offset_table[i] * fTexelH, 0.0f, g_weight_table[i]);
}
Vector4 *pConstants;
ID3D10Device *device = GutGetGraphicsDeviceDX10();
device->VSSetShader(g_pBlurVS);
device->PSSetShader(g_pBlurPS);
ID3D10Buffer *buffer_array[2] = {g_pVSConstantBuffer, g_pBlurConstantBuffer};
device->VSSetConstantBuffers(0, 2, buffer_array);
device->PSSetConstantBuffers(0, 2, buffer_array);
UINT stride = sizeof(Vertex_VT);
UINT offset = 0;
g_pDevice->IASetInputLayout(g_pVertexLayout);
g_pDevice->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
g_pDevice->IASetVertexBuffers(0, 1, &g_pVertexBuffer, &stride, &offset);
// 水平模糊
{
device->OMSetRenderTargets(1, &g_pFrameRTView[0], NULL);
g_pBlurConstantBuffer->Map( D3D10_MAP_WRITE_DISCARD, NULL, (void **) &pConstants);
memcpy(pConstants, vTexOffsetX, sizeof(Vector4)*num_samples);
g_pBlurConstantBuffer->Unmap();
g_pDevice->PSSetShaderResources(0, 1, &pTexture);
g_pDevice->Draw(4, 0);
}
// 垂直模糊
{
device->OMSetRenderTargets(1, &g_pFrameRTView[1], NULL);
g_pBlurConstantBuffer->Map( D3D10_MAP_WRITE_DISCARD, NULL, (void **) &pConstants);
memcpy(pConstants, vTexOffsetY, sizeof(Vector4)*num_samples);
g_pBlurConstantBuffer->Unmap();
g_pDevice->PSSetShaderResources(0, 1, &g_pFrameSRView[0]);
g_pDevice->Draw(4, 0);
}
return g_pFrameSRView[1];
}